ANTIHISTAMINE

Reference standards play a crucial role in ensuring the quality, potency, and effectiveness of antihistamine medications. These standards, established by regulatory bodies such as pharmacopoeias, provide a benchmark against which the identity, purity, and strength of antihistamine drug substances and products can be assessed. By using reference standards, manufacturers can accurately determine the active ingredient content, impurities, and degradation products in their antihistamine formulations. This helps to ensure consistent product quality and safety for patients, as well as facilitate regulatory compliance. Additionally, reference standards enable comparison and interchangeability of antihistamine products across different manufacturers, ensuring that patients receive reliable and effective treatment options for allergies and related conditions.

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Acrivastine

API Standards


  • CAT No.:
    CS-O-00802

  • CAS No.:
    87848-99-5

  • Molecular Formula :
    C22H24N2O2

  • Molecular Weight :
    348.44

Acrivastine D7

Stable Isotopes


  • CAT No.:
    CS-CX-00054

  • CAS No.:
    172165-56-9

  • Molecular Formula :
    C22H17D7N2O2

  • Molecular Weight :
    355.48


  • CAT No.:
    CS-T-01543

  • CAS No.:
    147083-93-0


  • CAT No.:
    CS-P-08084

  • CAS No.:
    147083-12-3


  • CAT No.:
    CS-P-08085


  • CAT No.:
    CS-T-56276

  • CAS No.:
    1628639-06-4

  • Molecular Formula :
    C21H23NO4

  • Molecular Weight :
    353.41


  • CAT No.:
    CS-T-56275

  • CAS No.:
    1331668-21-3

  • Molecular Formula :
    C21H24ClNO4

  • Molecular Weight :
    389.87

Astemizole

API Standards


  • CAT No.:
    CS-O-11602

  • CAS No.:
    68844-77-9

  • Molecular Formula :
    C28H31FN4O

  • Molecular Weight :
    458.57

Azelastine 13C,d3

Stable Isotopes


  • CAT No.:
    CS-T-48465

  • CAS No.:
    1217019-80-1

Azelastine D4

Stable Isotopes


  • CAT No.:
    CS-O-14396

  • CAS No.:
    1228258-93-2


  • CAT No.:
    CS-O-03081

  • CAS No.:
    1228258-95-4 (Free base)

  • Molecular Formula :
    C22H21D4Cl2N3O

  • Molecular Weight :
    422.38


  • CAT No.:
    CS-M-43257

  • CAS No.:
    613-94-5

  • Molecular Formula :
    C7H8N2O

  • Molecular Weight :
    136.15


  • CAT No.:
    CS-O-13790

  • CAS No.:
    110406-94-5

  • Molecular Formula :
    C14H21N3O

  • Molecular Weight :
    247.34


  • CAT No.:
    CS-T-12256

  • CAS No.:
    53242-76-5

  • Molecular Formula :
    C15H11ClO3

  • Molecular Weight :
    274.7


  • CAT No.:
    CS-T-12336

  • CAS No.:
    53242-88-9

  • Molecular Formula :
    C15H11ClN2O

  • Molecular Weight :
    270.71


  • CAT No.:
    CS-O-15175

  • CAS No.:
    105279-16-1


  • CAT No.:
    CS-O-10236

  • CAS No.:
    79307-93-0

  • Molecular Formula :
    C22H25Cl2N3O

  • Molecular Weight :
    418.36


  • CAT No.:
    CS-T-48466

  • CAS No.:
    640279-88-5

  • Molecular Formula :
    C22H24ClN3O2

  • Molecular Weight :
    397.90


  • CAT No.:
    CS-T-54172

  • CAS No.:
    161193-44-8

  • Molecular Formula :
    C37H66N2O12

  • Molecular Weight :
    730.93

Benzhydryl bromide

Intermediates


  • CAT No.:
    CS-O-11372

  • CAS No.:
    776-74-9

  • Molecular Formula :
    C13H11Br

  • Molecular Weight :
    247.13

Bilastine

API Standards


  • CAT No.:
    CS-O-06184

  • CAS No.:
    202189-78-4

  • Molecular Formula :
    C28H37N3O3

  • Molecular Weight :
    463.61


  • CAT No.:
    CS-O-14023

  • CAS No.:
    1181267-36-6


  • CAT No.:
    CS-O-14021

  • CAS No.:
    1638785-17-7

Bilastine D6

Stable Isotopes


  • CAT No.:
    CS-O-15080

  • CAS No.:
    202189-78-4 (Unlabeled)

  • Molecular Formula :
    C28H31D6N3O3

  • Molecular Weight :
    469.65


  • CAT No.:
    CS-P-00732

  • CAS No.:
    953071-73-3


  • CAT No.:
    CS-O-14026

  • CAS No.:
    1638785-15-5

  • Molecular Formula :
    C14H18ClNO3

  • Molecular Weight :
    283.75


  • CAT No.:
    CS-O-14025

  • CAS No.:
    2069238-47-5

  • Molecular Formula :
    C28H37N3O4

  • Molecular Weight :
    479.61


  • CAT No.:
    CS-O-14022

  • CAS No.:
    1638785-18-8

Brompheniramine

API Standards


  • CAT No.:
    CS-O-06170

  • CAS No.:
    86-22-6

  • Molecular Formula :
    C16H19BrN2

  • Molecular Weight :
    319.24


  • CAT No.:
    CS-O-01002

  • CAS No.:
    980-71-2

  • Molecular Formula :
    C20H23BrN2O4

  • Molecular Weight :
    435.31

Buclizine

API Standards


  • CAT No.:
    CS-P-00366

  • CAS No.:
    82-95-1


  • CAT No.:
    CS-O-06448

  • CAS No.:
    129-74-8(Unlabeled)

  • Molecular Formula :
    C28H27D8Cl3N2

  • Molecular Weight :
    514.00


  • CAT No.:
    CS-O-03935

  • CAS No.:
    129-74-8

  • Molecular Formula :
    C28H35Cl3N2

  • Molecular Weight :
    505.95


  • CAT No.:
    CS-P-07555

  • CAS No.:
    14159-57-0


  • CAT No.:
    CS-O-07594

  • CAS No.:
    1232460-29-5

  • Molecular Formula :
    C21H25ClN2O3 : 2(HCl)

  • Molecular Weight :
    388.9 : 2(36.5)

Cetirizine Amide

Impurities


  • CAT No.:
    CS-T-10979

  • CAS No.:
    83881-37-2

  • Molecular Formula :
    C21H26ClN3O2

  • Molecular Weight :
    387.9


  • CAT No.:
    CS-T-10980

  • CAS No.:
    200707-85-3

Cetirizine D4

Stable Isotopes


  • CAT No.:
    CS-O-01307

  • CAS No.:
    1219803-84-5

Cetirizine D8

Stable Isotopes


  • CAT No.:
    CS-O-03058

  • CAS No.:
    774596-22-4

  • Molecular Formula :
    C21H17D8ClN2O3

  • Molecular Weight :
    396.94


  • CAT No.:
    CS-O-31588

  • CAS No.:
    303-26-4

  • Molecular Formula :
    C17H19ClN2

  • Molecular Weight :
    286.80


  • CAT No.:
    CS-T-14604

  • CAS No.:
    113740-61-7

  • Molecular Formula :
    C19H21ClN2O2

  • Molecular Weight :
    344.84


  • CAT No.:
    CS-O-07600

  • CAS No.:
    19178-83-7

  • Molecular Formula :
    C21H25ClN2O2

  • Molecular Weight :
    372.88


  • CAT No.:
    CS-O-07601

  • CAS No.:
    83881-59-8

  • Molecular Formula :
    C21H27Cl3N2O3

  • Molecular Weight :
    461.81


  • CAT No.:
    CS-O-07602

  • CAS No.:
    856841-95-7

  • Molecular Formula :
    C30H28Cl2N2

  • Molecular Weight :
    487.5


  • CAT No.:
    CS-CB-00053

  • CAS No.:
    682323-77-9

  • Molecular Formula :
    C23H29ClN2O4

  • Molecular Weight :
    432.94


  • CAT No.:
    CS-O-07603

  • CAS No.:
    83881-56-5

  • Molecular Formula :
    C23H31Cl3N2O4

  • Molecular Weight :
    505.86 g/mol


  • CAT No.:
    CS-O-07604

  • CAS No.:
    83881-53-2

  • Molecular Formula :
    C21H26N2O3

  • Molecular Weight :
    354.44


  • CAT No.:
    CS-T-10981

  • CAS No.:
    246870-46-2

  • Molecular Formula :
    C23H29ClN2O3

  • Molecular Weight :
    416.94 g/mol


  • CAT No.:
    CS-EG-00307

  • CAS No.:
    83881-52-1


  • CAT No.:
    CS-T-10966

  • CAS No.:
    1243652-36-9


  • CAT No.:
    CS-P-07459

  • CAS No.:
    1243652-36-9 (free base)


  • CAT No.:
    CS-O-01088

  • CAS No.:
    798544-25-9

  • Molecular Formula :
    C21H25ClN2O3 : HCl

  • Molecular Weight :
    388.9 : 36.5


  • CAT No.:
    CS-EG-00306

  • CAS No.:
    303-26-4


  • CAT No.:
    CS-O-15936

  • CAS No.:
    1000690-91-4

  • Molecular Formula :
    C19H23Cl3N2O2

  • Molecular Weight :
    417.76 g/mol


  • CAT No.:
    CS-DN-00043


  • CAT No.:
    CS-DN-00001


  • CAT No.:
    CS-O-16047

  • CAS No.:
    2702511-37-1

  • Molecular Formula :
    C21H27Cl3N2O3

  • Molecular Weight :
    461.81


  • CAT No.:
    CS-DH-00032

  • CAS No.:
    346451-15-8

  • Molecular Formula :
    C30H28Cl2N2

  • Molecular Weight :
    487.46


  • CAT No.:
    CS-P-07456

  • CAS No.:
    682323-77-9 (free base)

  • Molecular Formula :
    C23H28ClN2O4Na

  • Molecular Weight :
    454.92


  • CAT No.:
    CS-O-30391

  • CAS No.:
    728948-88-7

  • Molecular Formula :
    C19H25Cl3N2O

  • Molecular Weight :
    403.77


  • CAT No.:
    CS-O-07605

  • CAS No.:
    164726-80-1

  • Molecular Formula :
    C19H25Cl3N2O

  • Molecular Weight :
    403.77


  • CAT No.:
    CS-P-03772

  • Molecular Formula :
    C34H46Cl2N2O13

  • Molecular Weight :
    749.63


  • CAT No.:
    CS-O-06030

  • CAS No.:
    83881-46-3

  • Molecular Formula :
    C22H27ClN2O3

  • Molecular Weight :
    402.9

Cetirizine N-Oxide

Metabolites


  • CAT No.:
    CS-O-05852

  • CAS No.:
    1076199-80-8

  • Molecular Formula :
    C21H25ClN2O4

  • Molecular Weight :
    404.89


  • CAT No.:
    CS-T-50496

  • CAS No.:
    1509941-93-8


  • CAT No.:
    CS-O-07609

  • CAS No.:
    163837-48-7

  • Molecular Formula :
    C21H27Cl3N2O3

  • Molecular Weight :
    461.81


  • CAT No.:
    CS-P-07464

  • CAS No.:
    1384888-64-5 (free base)

  • Molecular Formula :
    C27H38Cl2N2O8

  • Molecular Weight :
    589.51


  • CAT No.:
    CS-O-07610

  • CAS No.:
    246870-46-2(base)

  • Molecular Formula :
    C23H31Cl3N2O3

  • Molecular Weight :
    489.86

Chlorpheniramine D4

Stable Isotopes


  • CAT No.:
    CS-BV-00013

  • CAS No.:
    132-22-9

Chlorpheniramine D6

Stable Isotopes


  • CAT No.:
    CS-T-51081

  • CAS No.:
    1185054-60-7


  • CAT No.:
    CS-O-06482

  • CAS No.:
    1219806-45-7

  • Molecular Formula :
    C20H17D6ClN2O4

  • Molecular Weight :
    396.90


  • CAT No.:
    CS-O-15275

  • CAS No.:
    65676-21-3(freebase)

  • Molecular Formula :
    C21H22ClN3O4

  • Molecular Weight :
    415.87


  • CAT No.:
    CS-O-01160

  • CAS No.:
    113-92-8

  • Molecular Formula :
    C20H23ClN2O4

  • Molecular Weight :
    390.86


  • CAT No.:
    CS-T-72321

  • CAS No.:
    65676-21-3

  • Molecular Formula :
    C17H18ClN3

  • Molecular Weight :
    299.80


  • CAT No.:
    CS-P-07525

  • CAS No.:
    120244-82-8

  • Molecular Formula :
    C16H19ClN2O

  • Molecular Weight :
    290.8


  • CAT No.:
    CS-T-11780

  • CAS No.:
    19077-20-4

  • Molecular Formula :
    C21H28ClN3S

  • Molecular Weight :
    390.0

cyproheptadine

API Standards


  • CAT No.:
    CS-O-30548

  • CAS No.:
    129-03-3

  • Molecular Formula :
    C21H21N

  • Molecular Weight :
    287.40


  • CAT No.:
    CS-O-15509

  • CAS No.:
    969-33-5

  • Molecular Formula :
    C21H22ClN

  • Molecular Weight :
    323.86


  • CAT No.:
    CS-P-00916

  • CAS No.:
    54191-04-7


  • CAT No.:
    CS-P-01258


  • CAT No.:
    CS-K-00033

  • CAS No.:
    3967-32-6

  • Molecular Formula :
    C21H23NO

  • Molecular Weight :
    305.4


  • CAT No.:
    CS-T-14667

  • CAS No.:
    13073-96-6

  • Molecular Formula :
    C21H30Cl2N2O2

  • Molecular Weight :
    413.38


  • CAT No.:
    CS-T-50913

  • CAS No.:
    117811-20-8


  • CAT No.:
    CS-T-73329

  • CAS No.:
    104953-06-2

Desalkyl Ebastine

Intermediates


  • CAT No.:
    CS-T-15724

  • CAS No.:
    58258-01-8

  • Molecular Formula :
    C18H21NO

  • Molecular Weight :
    267.37


  • CAT No.:
    CS-T-73775

  • CAS No.:
    83881-54-3

  • Molecular Formula :
    C21H28Cl2N2O3

  • Molecular Weight :
    427.36 g/mol


  • CAT No.:
    CS-T-88876

  • CAS No.:
    79779-58-1

Desloratadine

API Standards


  • CAT No.:
    CS-O-00556

  • CAS No.:
    100643-71-8

  • Molecular Formula :
    C19H19ClN2

  • Molecular Weight :
    310.82


  • CAT No.:
    CS-O-16050

  • CAS No.:
    1246819-67-9


  • CAT No.:
    CS-O-07776

  • CAS No.:
    143540-56-1

Desloratadine D4

Stable Isotopes


  • CAT No.:
    CS-O-10056

  • CAS No.:
    381727-29-3

  • Molecular Formula :
    C19H15D4ClN2

  • Molecular Weight :
    314.85

Desloratadine D5

Stable Isotopes


  • CAT No.:
    CS-O-02713

  • CAS No.:
    1020719-34-9


  • CAT No.:
    CS-EO-00141

  • CAS No.:
    117811-16-2

  • Molecular Formula :
    C14H8ClNO

  • Molecular Weight :
    241.67


  • CAT No.:
    CS-O-07778

  • CAS No.:
    298220-99-2

  • Molecular Formula :
    C19H20ClFN2

  • Molecular Weight :
    330.83


  • CAT No.:
    CS-O-07779

  • CAS No.:
    183198-49-4

  • Molecular Formula :
    C19H19ClN2 : HCl

  • Molecular Weight :
    310.1 : 36.5


  • CAT No.:
    CS-EG-00438

  • CAS No.:
    100643-71-8

  • Molecular Formula :
    C19H1ClN2

  • Molecular Weight :
    310.8 g/mol


  • CAT No.:
    CS-O-07781

  • CAS No.:
    117796-52-8

  • Molecular Formula :
    C21H21ClN2O

  • Molecular Weight :
    352.9


  • CAT No.:
    CS-T-52179

  • CAS No.:
    165740-03-4

  • Molecular Formula :
    C21H21ClN2O2

  • Molecular Weight :
    368.86


  • CAT No.:
    CS-O-07782

  • CAS No.:
    117810-61-4

  • Molecular Formula :
    C20H19ClN2O

  • Molecular Weight :
    338.83


  • CAT No.:
    CS-O-07783

  • CAS No.:
    1193725-73-3

  • Molecular Formula :
    C19H19ClN2O

  • Molecular Weight :
    326.8


  • CAT No.:
    CS-T-52177

  • CAS No.:
    169253-26-3

  • Molecular Formula :
    C19H19ClN2O

  • Molecular Weight :
    326.82


  • CAT No.:
    CS-O-05868


  • CAT No.:
    CS-T-52212

  • CAS No.:
    22630-25-7

  • Molecular Formula :
    C15H17ClN2 : C4H4O4

  • Molecular Weight :
    260.8 : 116.1


  • CAT No.:
    CS-O-01355

  • CAS No.:
    2391-03-9

  • Molecular Formula :
    C20H23BrN2O4

  • Molecular Weight :
    435.31


  • CAT No.:
    CS-O-01285

  • CAS No.:
    2438-32-6

  • Molecular Formula :
    C20H23ClN2O4

  • Molecular Weight :
    390.86


  • CAT No.:
    CS-P-06936

  • CAS No.:
    32188-09-3

  • Molecular Formula :
    C16H19ClN2

  • Molecular Weight :
    274.79


  • CAT No.:
    CS-O-05743

  • CAS No.:
    163837-48-7

  • Molecular Formula :
    C21H27Cl3N2O3

  • Molecular Weight :
    461.81


  • CAT No.:
    CS-O-31385

  • CAS No.:
    55689-64-0


  • CAT No.:
    CS-O-33808

  • CAS No.:
    20619-13-0

  • Molecular Formula :
    C14H15ClN2

  • Molecular Weight :
    246.74


  • CAT No.:
    CS-T-52742

  • CAS No.:
    23052-94-0


  • CAT No.:
    CS-T-20855

  • CAS No.:
    88637-37-0

  • Molecular Formula :
    C17H21NO : C6H8O7

  • Molecular Weight :
    255.4 : 192.1


  • CAT No.:
    CS-O-06550

  • CAS No.:
    1219795-16-0

  • Molecular Formula :
    C17H16D5NO : HCl

  • Molecular Weight :
    260.4 : 36.5


  • CAT No.:
    CS-O-10860

  • CAS No.:
    147-24-0

  • Molecular Formula :
    C17H22ClNO

  • Molecular Weight :
    291.82


  • CAT No.:
    CS-M-53270

  • CAS No.:
    53499-40-4

  • Molecular Formula :
    C16H20ClNO

  • Molecular Weight :
    277.79


  • CAT No.:
    CS-CY-00018

  • CAS No.:
    4024-34-4

  • Molecular Formula :
    C18H24ClNO

  • Molecular Weight :
    305.84


  • CAT No.:
    CS-O-30389

  • CAS No.:
    1808-12-4

  • Molecular Formula :
    C17H20BrNO : HCl

  • Molecular Weight :
    334.3 : 36.5


  • CAT No.:
    CS-O-30428

  • CAS No.:
    574-42-5

  • Molecular Formula :
    C26H22O

  • Molecular Weight :
    350.45


  • CAT No.:
    CS-O-11820

  • CAS No.:
    3922-74-5

  • Molecular Formula :
    C17H21NO2

  • Molecular Weight :
    271.4


  • CAT No.:
    CS-DH-00007

  • CAS No.:
    13168-00-8


  • CAT No.:
    CS-O-04187

  • CAS No.:
    132-18-3

Ebastine

API Standards


  • CAT No.:
    CS-O-10904

  • CAS No.:
    90729-43-4

  • Molecular Formula :
    C32H39NO2

  • Molecular Weight :
    469.66

Ebastine D6

Stable Isotopes


  • CAT No.:
    CS-O-11106

  • CAS No.:
    90729-43-4 (Unlabeled)


  • CAT No.:
    CS-T-48645

  • CAS No.:
    91-01-0

  • Molecular Formula :
    C13H12O

  • Molecular Weight :
    184.23


  • CAT No.:
    CS-T-09280

  • CAS No.:
    97928-18-2

  • Molecular Formula :
    C19H29NO2

  • Molecular Weight :
    303.44


  • CAT No.:
    CS-T-54007

  • CAS No.:
    1256285-71-8


  • CAT No.:
    CS-P-01316

  • CAS No.:
    1429071-65-7

  • Molecular Formula :
    C32H39NO3

  • Molecular Weight :
    485.66


  • CAT No.:
    CS-P-01314

  • Molecular Formula :
    C37H45NO6

  • Molecular Weight :
    599.76

Ebastine-d5

Stable Isotopes


  • CAT No.:
    CS-O-10173

  • CAS No.:
    1216953-13-7

Ebastine-D5 Fumarate

Stable Isotopes


  • CAT No.:
    CS-P-00967

  • CAS No.:
    1316815-02-7

Emedastine Difumarate

API Standards


  • CAT No.:
    CS-P-00414

  • CAS No.:
    87233-62-3

  • Molecular Formula :
    C25H34N4O9

  • Molecular Weight :
    534.56


  • CAT No.:
    CS-P-07867

  • CAS No.:
    122423-32-9

  • Molecular Formula :
    C15H22N4O

  • Molecular Weight :
    274.36

Epinastine

API Standards


  • CAT No.:
    CS-O-15503

  • CAS No.:
    80012-43-7

  • Molecular Formula :
    C16H15N3

  • Molecular Weight :
    249.31


  • CAT No.:
    CS-P-07873

  • CAS No.:
    706753-75-5


  • CAT No.:
    CS-O-30902

  • CAS No.:
    108929-04-0

  • Molecular Formula :
    C16H16ClN3

  • Molecular Weight :
    285.77


  • CAT No.:
    CS-P-07870

  • CAS No.:
    141342-71-4 (free base)


  • CAT No.:
    CS-P-07872

  • CAS No.:
    41218-84-2

  • Molecular Formula :
    C15H16N2

  • Molecular Weight :
    224.3

Erythrolosamine

API Standards


  • CAT No.:
    CS-T-54161

  • CAS No.:
    53066-32-3

Erythromycin

API Standards


  • CAT No.:
    CS-O-11641

  • CAS No.:
    114-07-8

  • Molecular Formula :
    C37H67NO13

  • Molecular Weight :
    733.93

Erythromycin 13C D3

Stable Isotopes


  • CAT No.:
    CS-O-06591

  • CAS No.:
    959119-26-7

  • Molecular Formula :
    C36��CH64D3NO13

  • Molecular Weight :
    737.94


  • CAT No.:
    CS-T-54171

  • CAS No.:
    99290-97-8

  • Molecular Formula :
    C37H66N2O12

  • Molecular Weight :
    730.93


  • CAT No.:
    CS-T-54164

  • CAS No.:
    33396-29-1

  • Molecular Formula :
    C37H65NO12

  • Molecular Weight :
    715.91


  • CAT No.:
    CS-EG-00576

  • CAS No.:
    114-07-8

  • Molecular Formula :
    C37H67NO13

  • Molecular Weight :
    733.93

Erythromycin B

Intermediates


  • CAT No.:
    CS-T-21948

  • CAS No.:
    527-75-3


  • CAT No.:
    CS-EG-00564

  • CAS No.:
    527-75-3

  • Molecular Formula :
    C37H67NO12

  • Molecular Weight :
    717.93

Erythromycin C

Impurities


  • CAT No.:
    CS-T-54165

  • CAS No.:
    1675-02-1

  • Molecular Formula :
    C36H65NO13

  • Molecular Weight :
    719.9


  • CAT No.:
    CS-EG-00565

  • CAS No.:
    1675-02-1

  • Molecular Formula :
    C36H65NO13

  • Molecular Weight :
    719.90

Erythromycin D3

Stable Isotopes


  • CAT No.:
    CS-O-14220

  • CAS No.:
    959119-26-7

  • Molecular Formula :
    C37H64D3NO13

  • Molecular Weight :
    736.95

Erythromycin D6

Stable Isotopes


  • CAT No.:
    CS-T-54162

  • CAS No.:
    959119-25-6

  • Molecular Formula :
    C37H61D6NO13

  • Molecular Weight :
    740

Erythromycin E

API Standards


  • CAT No.:
    CS-T-21952

  • CAS No.:
    41451-91-6

  • Molecular Formula :
    C37H65NO14

  • Molecular Weight :
    747.91


  • CAT No.:
    CS-O-16844

  • CAS No.:
    82230-93-1

  • Molecular Formula :
    C37H67NO14

  • Molecular Weight :
    749.94


  • CAT No.:
    CS-O-16518

  • CAS No.:
    33442-56-7

  • Molecular Formula :
    C36H65NO12

  • Molecular Weight :
    703.9

Erythromycin Estolate

API Standards


  • CAT No.:
    CS-T-54168

  • CAS No.:
    3521-62-8

  • Molecular Formula :
    C52H97NO18S


  • CAT No.:
    CS-O-13302

  • CAS No.:
    1264-62-6(Unlabeled)

  • Molecular Formula :
    C43H69D6NO16

  • Molecular Weight :
    868.09


  • CAT No.:
    CS-O-00215

  • CAS No.:
    41342-53-4

  • Molecular Formula :
    C43H75NO16

  • Molecular Weight :
    862.05


  • CAT No.:
    CS-EG-00580

  • CAS No.:
    114-07-8

  • Molecular Formula :
    C37H67NO13

  • Molecular Weight :
    733.93


  • CAT No.:
    CS-EG-00579

  • CAS No.:
    114-07-8

  • Molecular Formula :
    C37H67NO13

  • Molecular Weight :
    733.93


  • CAT No.:
    CS-T-54167

  • CAS No.:
    23067-13-2


  • CAT No.:
    CS-O-10091

  • CAS No.:
    23893-13-2

  • Molecular Formula :
    C37H65NO12

  • Molecular Weight :
    715.9


  • CAT No.:
    CS-P-07834

  • CAS No.:
    857839-61-3


  • CAT No.:
    CS-P-08065

  • CAS No.:
    127955-44-6

  • Molecular Formula :
    C37H65NO14

  • Molecular Weight :
    747.91


  • CAT No.:
    CS-T-54175

  • CAS No.:
    3847-29-8


  • CAT No.:
    CS-AH-00118

  • CAS No.:
    134-36-1

  • Molecular Formula :
    C40H17NO14

  • Molecular Weight :
    789.99

Erythromycin stearate

API Standards


  • CAT No.:
    CS-O-01436

  • CAS No.:
    643-22-1

  • Molecular Formula :
    C55H103NO15

  • Molecular Weight :
    1018.40


  • CAT No.:
    CS-O-00232

  • CAS No.:
    7704-67-8

  • Molecular Formula :
    C38H68N2O13S

  • Molecular Weight :
    793.02


  • CAT No.:
    CS-CM-00085

  • CAS No.:
    992-65-4

  • Molecular Formula :
    C37H67NO14

  • Molecular Weight :
    749.92


  • CAT No.:
    CS-T-54703

  • CAS No.:
    479035-75-1

  • Molecular Formula :
    C32H39NO4

  • Molecular Weight :
    501.66

Fexofenadine D6

Stable Isotopes


  • CAT No.:
    CS-O-02714

  • CAS No.:
    548783-71-7

  • Molecular Formula :
    C32H33D6NO4

  • Molecular Weight :
    507.69


  • CAT No.:
    CS-O-03405

  • CAS No.:
    76811-98-8

  • Molecular Formula :
    C32H37NO4

  • Molecular Weight :
    499.64


  • CAT No.:
    CS-O-00610

  • CAS No.:
    153439-40-8

  • Molecular Formula :
    C32H40ClNO4

  • Molecular Weight :
    538.12


  • CAT No.:
    CS-O-10070

  • CAS No.:
    185066-37-9

  • Molecular Formula :
    C31H39NO2

  • Molecular Weight :
    457.65


  • CAT No.:
    CS-T-54705

  • CAS No.:
    154825-96-4

  • Molecular Formula :
    C33H41NO4

  • Molecular Weight :
    515.7


  • CAT No.:
    CS-O-14191

  • CAS No.:
    185066-33-5


  • CAT No.:
    CS-T-53856

  • CAS No.:
    1187954-57-9


  • CAT No.:
    CS-EN-00073

  • Molecular Formula :
    C32H39NO4

  • Molecular Weight :
    501.667


  • CAT No.:
    CS-T-54704

  • CAS No.:
    1215821-44-5

  • Molecular Formula :
    C32H30D10ClNO4

  • Molecular Weight :
    548.18


  • CAT No.:
    CS-T-54706

  • CAS No.:
    1286458-00-1


  • CAT No.:
    CS-CX-00667

  • CAS No.:
    6055-52-3(Unlabeled)


  • CAT No.:
    CS-O-31383

  • CAS No.:
    27710-82-3


  • CAT No.:
    CS-T-56802

  • CAS No.:
    432543-89-0

Isoxepac

Fine Chemicals


  • CAT No.:
    CS-O-31382

  • CAS No.:
    55453-87-7

  • Molecular Formula :
    C16H12O4

  • Molecular Weight :
    268.26

Levocetirizine

API Standards


  • CAT No.:
    CS-O-05742

  • CAS No.:
    130018-77-8

  • Molecular Formula :
    C21H25ClN2O3

  • Molecular Weight :
    388.89

Levocetirizine D4

Stable Isotopes


  • CAT No.:
    CS-O-02878

  • CAS No.:
    1133210-23-7

  • Molecular Formula :
    C21H21D4ClN2O3

  • Molecular Weight :
    392.91


  • CAT No.:
    CS-O-14652

  • CAS No.:
    130018-87-0(Unlabeled)

  • Molecular Formula :
    C21H23D4Cl3N2O3

  • Molecular Weight :
    465.83


  • CAT No.:
    CS-O-01775

  • CAS No.:
    130018-87-0

  • Molecular Formula :
    C21H27Cl3N2O3

  • Molecular Weight :
    461.81


  • CAT No.:
    CS-P-05076

  • CAS No.:
    1150310-68-1

  • Molecular Formula :
    C28H32ClN3O2

  • Molecular Weight :
    478


  • CAT No.:
    CS-CK-00002

  • CAS No.:
    109806-71-5

  • Molecular Formula :
    C19H23ClN2O

  • Molecular Weight :
    330.85

Loratadine

API Standards


  • CAT No.:
    CS-O-01778

  • CAS No.:
    79794-75-5

  • Molecular Formula :
    C22H23ClN2O2

  • Molecular Weight :
    382.88


  • CAT No.:
    CS-CB-00047

  • CAS No.:
    133284-74-9

  • Molecular Formula :
    C22H25ClN2O3

  • Molecular Weight :
    400.90


  • CAT No.:
    CS-T-50635

  • CAS No.:
    31251-41-9

  • Molecular Formula :
    C14H10ClNO

  • Molecular Weight :
    243.69


  • CAT No.:
    CS-O-14709

  • CAS No.:
    125743-80-8

  • Molecular Formula :
    C22H24ClFN2O2

  • Molecular Weight :
    402.89


  • CAT No.:
    CS-O-07784

  • CAS No.:
    38092-89-6

  • Molecular Formula :
    C20H21ClN2

  • Molecular Weight :
    324.85

Loratadine N-Oxide

Metabolites


  • CAT No.:
    CS-O-05927

  • CAS No.:
    165739-62-8

  • Molecular Formula :
    C22H2ClN2O3

  • Molecular Weight :
    398.88

Loratadine-d4

Stable Isotopes


  • CAT No.:
    CS-O-31235

  • CAS No.:
    381727-27-1

  • Molecular Formula :
    C22H19D4ClN2O2

  • Molecular Weight :
    386.91

Loratadine-d5 (ethyl-d5)

Stable Isotopes


  • CAT No.:
    CS-T-57296

  • CAS No.:
    1398065-63-8

  • Molecular Formula :
    C22H18D5ClN2O2

  • Molecular Weight :
    387.91


  • CAT No.:
    CS-O-15949

  • CAS No.:
    343255-26-5


  • CAT No.:
    CS-O-15948

  • CAS No.:
    394222-30-1


  • CAT No.:
    CS-T-33472

  • CAS No.:
    76469-88-0


  • CAT No.:
    CS-O-31616

  • CAS No.:
    29681-45-6


  • CAT No.:
    CS-O-14362

  • CAS No.:
    113835-94-2


  • CAT No.:
    CS-T-01717

  • CAS No.:
    20962-92-9


  • CAT No.:
    CS-T-05676

  • CAS No.:
    1391053-09-0


  • CAT No.:
    CS-T-48813

  • CAS No.:
    1391051-79-8


  • CAT No.:
    CS-T-51847

  • CAS No.:
    992-62-1

  • Molecular Formula :
    C36H65NO13

  • Molecular Weight :
    719.90


  • CAT No.:
    CS-O-33553


  • CAT No.:
    CS-EG-00428

  • CAS No.:
    992-62-1


  • CAT No.:
    CS-P-07835

  • CAS No.:
    147702-49-6


  • CAT No.:
    CS-O-06428

  • CAS No.:
    47491-38-3(Unlabeled)

  • Molecular Formula :
    C21H18D4ClN3O

  • Molecular Weight :
    371.9


  • CAT No.:
    CS-T-16390

  • CAS No.:
    113835-92-0

  • Molecular Formula :
    C20H21NO3

  • Molecular Weight :
    323.39


  • CAT No.:
    CS-T-22310

  • CAS No.:
    84501-68-8


  • CAT No.:
    CS-T-58300

  • CAS No.:
    183198-48-3

N-Methylpiperazine D8

Stable Isotope Reagent


  • CAT No.:
    CS-O-16257

  • CAS No.:
    917358-65-7


  • CAT No.:
    CS-T-59617

  • CAS No.:
    1246819-22-6

  • Molecular Formula :
    C19H18ClN3O

  • Molecular Weight :
    339.82

N-Nitrosopiperazine D8

Stable Isotopes


  • CAT No.:
    CS-T-59645

  • CAS No.:
    1330180-56-7

  • Molecular Formula :
    C4HD8N3O

  • Molecular Weight :
    123.18

N-Nitrosopiperidine D10

Stable Isotopes


  • CAT No.:
    CS-T-59646

  • CAS No.:
    960049-21-2

  • Molecular Formula :
    C5D10N2O

  • Molecular Weight :
    124.21


  • CAT No.:
    CS-T-37450

  • CAS No.:
    75970-64-8

Olopatadine

API Standards


  • CAT No.:
    CS-O-02025

  • CAS No.:
    113806-05-6

  • Molecular Formula :
    C21H23NO3

  • Molecular Weight :
    337.41


  • CAT No.:
    CS-T-59936

  • Molecular Formula :
    C20H22ClNO2

  • Molecular Weight :
    343.85

Olopatadine D6

Stable Isotopes


  • CAT No.:
    CS-O-10112

  • CAS No.:
    1231979-85-3

  • Molecular Formula :
    C21H18D6NO3

  • Molecular Weight :
    343.44


  • CAT No.:
    CS-O-31184

  • CAS No.:
    140462-76-6

  • Molecular Formula :
    C21H24ClNO3

  • Molecular Weight :
    373.87


  • CAT No.:
    CS-T-38024

  • CAS No.:
    113835-76-0


  • CAT No.:
    CS-T-38023

  • CAS No.:
    113805-71-3

Olopatadine pamoate

API Standards


  • CAT No.:
    CS-O-02047


  • CAT No.:
    CS-T-59939

  • CAS No.:
    173174-07-7

  • Molecular Formula :
    C21H23NO4

  • Molecular Weight :
    353.41

Olopatadine-d3 N-Oxide

Stable Isotopes


  • CAT No.:
    CS-T-59940

  • CAS No.:
    1331666-71-7


  • CAT No.:
    CS-T-39230

  • CAS No.:
    5503-08-2


  • CAT No.:
    CS-B-00225

  • CAS No.:
    82-88-2


  • CAT No.:
    CS-P-01968

  • CAS No.:
    114226-44-7

Pheniramine

API Standards


  • CAT No.:
    CS-O-11352

  • CAS No.:
    86-21-5

  • Molecular Formula :
    C16H20N2

  • Molecular Weight :
    240.4

Pheniramine maleate

API Standards


  • CAT No.:
    CS-O-11711

  • CAS No.:
    132-20-7

  • Molecular Formula :
    C20H24N2O4

  • Molecular Weight :
    356.42


  • CAT No.:
    CS-O-11138

  • CAS No.:
    12656-98-3

  • Molecular Formula :
    C16H20N2O

  • Molecular Weight :
    256.3

Piperazine D8

Stable Isotope Reagent


  • CAT No.:
    CS-O-30499

  • CAS No.:
    134628-42-5

  • Molecular Formula :
    C4H2D8N2

  • Molecular Weight :
    94.18


  • CAT No.:
    CS-T-60871

  • CAS No.:
    1225-65-6


  • CAT No.:
    CS-T-85544

  • CAS No.:
    1346604-67-8


  • CAT No.:
    CS-T-60670

  • CAS No.:
    105882-69-7

  • Molecular Formula :
    C37H65NO12

  • Molecular Weight :
    715.9


  • CAT No.:
    CS-T-85218

  • CAS No.:
    105900-46-7


  • CAT No.:
    CS-T-54169

  • CAS No.:
    425365-64-6

  • Molecular Formula :
    C42H78N2O16

  • Molecular Weight :
    867.1

Rupatadine D6 Tartrate

Stable Isotopes


  • CAT No.:
    CS-O-06947

  • CAS No.:
    913746-30-2(Unlabeled)

  • Molecular Formula :
    C30H26D6ClN3O6

  • Molecular Weight :
    572.08

Rupatadine Fumarate

API Standards


  • CAT No.:
    CS-O-30752

  • CAS No.:
    182349-12-8

  • Molecular Formula :
    C30H30ClN3O4

  • Molecular Weight :
    532.03


  • CAT No.:
    CS-O-32665

  • CAS No.:
    156523-04-5

  • Molecular Formula :
    C26H24ClN3O

  • Molecular Weight :
    429.94

Rupatidine

API Standards


  • CAT No.:
    CS-O-00282

  • CAS No.:
    158876-82-5

  • Molecular Formula :
    C26H26ClN3

  • Molecular Weight :
    416

seco Erythromycin

Impurities


  • CAT No.:
    CS-T-54163

  • CAS No.:
    143416-84-6

Terfenadine

API Standards


  • CAT No.:
    CS-O-30790

  • CAS No.:
    50679-08-8

  • Molecular Formula :
    C32H41NO2

  • Molecular Weight :
    471.67


  • CAT No.:
    CS-BX-00219

  • CAS No.:
    76815-56-0

Terfenadine D6

Stable Isotopes


  • CAT No.:
    CS-O-13202

  • CAS No.:
    50679-08-8 (Unlabeled)

Terfenadine-d3

Stable Isotopes


  • CAT No.:
    CS-T-86760

  • CAS No.:
    192584-82-0


  • CAT No.:
    CS-O-15217

  • CAS No.:
    1312211-93-0


  • CAT No.:
    CS-T-09309

  • CAS No.:
    335017-46-4


  • CAT No.:
    CS-P-07816

  • CAS No.:
    688-57-3

  • Molecular Formula :
    C8H14N2O6

  • Molecular Weight :
    234.2


  • CAT No.:
    CS-T-45791

  • CAS No.:
    154-69-8

Triprolidine

API Standards


  • CAT No.:
    CS-O-30800

  • CAS No.:
    486-12-4

  • Molecular Formula :
    C19H22N2

  • Molecular Weight :
    278.4

Triprolidine D4

Stable Isotopes


  • CAT No.:
    CS-P-00207

  • CAS No.:
    486-12-4 (Unlabeled)

Triprolidine D8

Stable Isotopes


  • CAT No.:
    CS-P-00208

  • CAS No.:
    486-12-4 (Unlabeled)


  • CAT No.:
    CS-O-14687

  • CAS No.:
    1795134-06-3

  • Molecular Formula :
    C19H15D8ClN2

  • Molecular Weight :
    322.91


  • CAT No.:
    CS-O-11765

  • CAS No.:
    550-70-9

  • Molecular Formula :
    C19H23ClN2

  • Molecular Weight :
    314.85


  • CAT No.:
    CS-O-32284

  • CAS No.:
    6138-79-0


  • CAT No.:
    CS-O-32084

  • CAS No.:
    192775-97-6


  • CAT No.:
    CS-T-48467

  • CAS No.:
    1346602-76-3


  • CAT No.:
    CS-T-32251

  • CAS No.:
    104499-47-0


  • CAT No.:
    CS-O-10581

  • CAS No.:
    130642-50-1

  • Molecular Formula :
    C20H23ClN2O

  • Molecular Weight :
    342.86


  • CAT No.:
    CS-O-31384

  • CAS No.:
    18355-96-9


  • CAT No.:
    CS-T-81385

  • CAS No.:
    1422960-88-0

(E)-Olopatadine

Impurities


  • CAT No.:
    CS-T-59938

  • CAS No.:
    113806-06-7

  • Molecular Formula :
    C21H23NO3

  • Molecular Weight :
    337.41


  • CAT No.:
    CS-P-02642

  • CAS No.:
    949141-22-4


  • CAT No.:
    CS-T-48463

  • CAS No.:
    153408-28-7


  • CAT No.:
    CS-P-07184


  • CAT No.:
    CS-P-07460

  • CAS No.:
    442863-80-1 (free base)


  • CAT No.:
    CS-O-03621

  • CAS No.:
    142494-45-9

  • Molecular Formula :
    C16H19ClN2O

  • Molecular Weight :
    290.79


  • CAT No.:
    CS-CX-00572

  • CAS No.:
    23095-76-3 (Unlabeled)

  • Molecular Formula :
    C20H17D6ClN2O4

  • Molecular Weight :
    396.9


  • CAT No.:
    CS-T-14603

  • CAS No.:
    942132-30-1

  • Molecular Formula :
    C19H22Cl2N2O22

  • Molecular Weight :
    381.30


  • CAT No.:
    CS-T-48464

  • CAS No.:
    153408-27-6


  • CAT No.:
    CS-DM-00028


  • CAT No.:
    CS-CX-00571

  • CAS No.:
    2438-32-6 (unlabeled)


  • CAT No.:
    CS-O-16269

  • CAS No.:
    5317-33-9

  • Molecular Formula :
    C8H18N2O

  • Molecular Weight :
    158.24


  • CAT No.:
    CS-O-31767

  • CAS No.:
    70708-28-0


  • CAT No.:
    CS-O-14024

  • CAS No.:
    1638785-23-5

  • Molecular Formula :
    C28H37N3O4

  • Molecular Weight :
    479.6


  • CAT No.:
    CS-T-79472

  • CAS No.:
    1638785-25-7


  • CAT No.:
    CS-T-08847

  • CAS No.:
    92357-95-4


  • CAT No.:
    CS-T-55961

  • CAS No.:
    38089-93-9

  • Molecular Formula :
    C20H23ClN2O

  • Molecular Weight :
    342.86 g/mol


  • CAT No.:
    CS-O-32950

  • CAS No.:
    288584-78-1

  • Molecular Formula :
    C38H69NO13

  • Molecular Weight :
    747.95


  • CAT No.:
    CS-T-51813

  • CAS No.:
    1795031-46-7

1-Nitrosopyrrolidine D4

Stable Isotope Reagent


  • CAT No.:
    CS-T-59649

  • CAS No.:
    57371-40-1

  • Molecular Formula :
    C4H4D4N2O

  • Molecular Weight :
    104.14


  • CAT No.:
    CS-T-34967

  • CAS No.:
    23503-68-6

2,2-Dipyridylamine

Fine Chemicals


  • CAT No.:
    CS-O-10894

  • CAS No.:
    1202-34-2

  • Molecular Formula :
    C10H9N3

  • Molecular Weight :
    171.2


  • CAT No.:
    CS-O-31185

  • CAS No.:
    55453-89-9


  • CAT No.:
    CS-T-72698

  • CAS No.:
    1794756-21-0


  • CAT No.:
    CS-T-50942

  • CAS No.:
    1391053-56-7

2-Amino-ethan-1,1,2,2-D4-ol

Stable Isotope Reagent


  • CAT No.:
    CS-O-20024

  • CAS No.:
    85047-08-1

  • Molecular Formula :
    C2H3D4NO

  • Molecular Weight :
    65.11


  • CAT No.:
    CS-T-55044

  • CAS No.:
    1076198-15-6


  • CAT No.:
    CS-O-07891

  • CAS No.:
    609806-39-5

  • Molecular Formula :
    C23H25ClN2O3

  • Molecular Weight :
    412.91


  • CAT No.:
    CS-O-05859

  • CAS No.:
    119410-08-1

  • Molecular Formula :
    C19H19ClN2O

  • Molecular Weight :
    326.82


  • CAT No.:
    CS-O-02970

  • CAS No.:
    119410-08-1(Unlabeled)(Freebase)

  • Molecular Formula :
    C19H15DClN2OBr

  • Molecular Weight :
    330.84


  • CAT No.:
    CS-T-55936

  • CAS No.:
    774538-89-5


  • CAT No.:
    CS-T-57668

  • CAS No.:
    165739-63-9


  • CAT No.:
    CS-T-57737

  • CAS No.:
    1189445-21-3


  • CAT No.:
    CS-O-10640

  • CAS No.:
    76811-97-7

  • Molecular Formula :
    C16H21ClO3

  • Molecular Weight :
    296.78


  • CAT No.:
    CS-T-52591

  • CAS No.:
    133330-60-6


  • CAT No.:
    CS-T-50853

  • CAS No.:
    37933-01-0

  • Molecular Formula :
    C22H24ClN3O

  • Molecular Weight :
    381.90


  • CAT No.:
    CS-T-50704

  • CAS No.:
    165739-83-3