Methotrexate Pharmaceutical Reference Standards
METHOTREXATE IMPURITIES, IMPURITIES
(R)-Methotrexate N-nitroso Impurity
| CAT No. | : CS-O-46623 |
| Mol F. | : C20H21N9O6 |
| Mol W. | : 483.44 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
(R)-Methotrexate-d3
| CAT No. | : CS-T-100078 |
| Mol F. | : C20H19D3N8O5 |
| Mol W. | : 457.46 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE INTERMEDIATES, INTERMEDIATES
7-Cyanomethotrexate Dimethyl Ester
| CAT No. | : CS-T-91917 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 112163-39-0 |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
7-Cyanomethotrexate Dimethyl Ester-D3
| CAT No. | : CS-T-102563 |
| Mol F. | : C23H22D3N9O5 |
| Mol W. | : 510.52 g/mol |
| Cas No. | : 432545-61-4 |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
7-Hydroxy Methotrexate-d3 Ammonium Salt
| CAT No. | : CS-T-101293 |
| Mol F. | : C20H22D3N9O6 |
| Mol W. | : 490.49 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE METABOLITES, METABOLITES
7-Hydroxymethotrexate
| CAT No. | : CS-EK-00154 |
| Mol F. | : C20H22N8O6 |
| Mol W. | : 470.4 g/mol |
| Cas No. | : 5939-37-7 |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
7-Hydroxymethotrexate D5
| CAT No. | : CS-O-48615 |
| Mol F. | : C20H17D5N8O6 |
| Mol W. | : 475.48 g/mol |
| Cas No. | : 5939-37-7 (Unlabelled) |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
7-Hydroxymethyl Methotrexate impurity A
| CAT No. | : CS-O-45505 |
| Mol F. | : C8H10N6O2 |
| Mol W. | : 222.21 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
DL-Methotrexate-d3 Dipotassium Salt
| CAT No. | : CS-T-97330 |
| Mol F. | : C20H17D3K2N8O5 |
| Mol W. | : 533.64 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Lysine-methotrexate
| CAT No. | : CS-T-85083 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 80407-56-3 |
| Stock | : Enquire |
METHOTREXATE API STANDARDS, API STANDARDS
Methotrexate
| CAT No. | : CS-O-30641 |
| Mol F. | : C₂₀H₂₂N₈O₅ |
| Mol W. | : 454.44 g/mol |
| Cas No. | : 59-05-2 |
| Stock | : IN-Stock |
METHOTREXATE EP STANDARDS, EP STANDARDS
Methotrexate EP
| CAT No. | : CS-EG-03297 |
| Mol F. | : C20H22N8O5 |
| Mol W. | : 454.4 g/mol |
| Cas No. | : 59-05-2 |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate - Impurity E (HCl Salt)
| CAT No. | : CS-O-40683 |
| Mol F. | : C30H31ClN14O4 |
| Mol W. | : 687.12 g/mol |
| Cas No. | : 70844-48-3 |
| Stock | : Enquire |
METHOTREXATE USP STANDARDS, USP STANDARDS
Methotrexate (1414003)
| CAT No. | : CS-EB-02570 |
| Mol F. | : C20H22N8O5 |
| Mol W. | : 454.44 g/mol |
| Cas No. | : 59-05-2 |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate 13CD3
| CAT No. | : CS-O-37441 |
| Mol F. | : C1913CH19D3N8O5 |
| Mol W. | : 458.45 g/mol |
| Cas No. | : 1786417-03-5 |
| Stock | : Enquire |
METHOTREXATE INTERMEDIATES, INTERMEDIATES
Methotrexate a-tert-Butyl Ester
| CAT No. | : CS-T-80280 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 79640-70-3 |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate D3
| CAT No. | : CS-O-06766 |
| Mol F. | : C₂₀H₁₉D₃N₈O₅ |
| Mol W. | : 457.46 g/mol |
| Cas No. | : 432545-63-6 |
| Stock | : IN-Stock |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate D7 Triglutamate
| CAT No. | : CS-O-32925 |
| Mol F. | : C30H29D7N10O11 |
| Mol W. | : 719.71 g/mol |
| Cas No. | : 59-05-2 (Unlabeled) |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate diethyl ester
| CAT No. | : CS-ED-41657 |
| Mol F. | : C24H30N8O5 |
| Mol W. | : 510.55 g/mol |
| Cas No. | : 43170-88-3 |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate Dimethylamide
| CAT No. | : CS-T-81347 |
| Mol F. | : C22H27N9O4 |
| Mol W. | : 481.5 g/mol |
| Cas No. | : 71074-44-7 |
| Stock | : Enquire |
METHOTREXATE INTERMEDIATES, INTERMEDIATES
Methotrexate Disodium Salt
| CAT No. | : CS-T-80712 |
| Mol F. | : C₂₀H₂₀N₈Na₂O₅ |
| Mol W. | : 498.40 g/mol |
| Cas No. | : 7413-34-5 |
| Stock | : IN-Stock |
METHOTREXATE API STANDARDS, API STANDARDS
Methotrexate Disodium Tetrahydrate
| CAT No. | : CS-EO-03684 |
| Mol F. | : C20H20N8O52 : 2(Na) : 4(H2O) |
| Mol W. | : 452.4 : 2(23.0) : 4(18.0) g/mol |
| Cas No. | : 59-05-2 (Freebase) |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity A
| CAT No. | : CS-T-40938 |
| Mol F. | : C₇H₈N₆O |
| Mol W. | : 192.18 g/mol |
| Cas No. | : 945-24-4 |
| Stock | : IN-Stock |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity B
| CAT No. | : CS-M-42743 |
| Mol F. | : C19H20N8O5 |
| Mol W. | : 440.4 g/mol |
| Cas No. | : 54-62-6 |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity B (MonoHydrate)
| CAT No. | : CS-O-48766 |
| Mol F. | : C19H22N8O6 |
| Mol W. | : 458.43 g/mol |
| Cas No. | : 1217459-90-9 |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity B Disodium salt
| CAT No. | : CS-O-46067 |
| Mol F. | : C19H20N8Na2O5 |
| Mol W. | : 486.40 g/mol |
| Cas No. | : 58602-66-7 |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity C
| CAT No. | : CS-T-33870 |
| Mol F. | : C₂₀H₂₁N₇O₆ |
| Mol W. | : 455.42 g/mol |
| Cas No. | : 2410-93-7 |
| Stock | : IN-Stock |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity D
| CAT No. | : CS-T-34871 |
| Mol F. | : C₁₅H₁₄N₆O₃ |
| Mol W. | : 326.31 g/mol |
| Cas No. | : 5623-18-7 |
| Stock | : IN-Stock |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity E
| CAT No. | : CS-T-14358 |
| Mol F. | : C₁₅H₁₅N₇O₂ |
| Mol W. | : 325.33 g/mol |
| Cas No. | : 19741-14-1 |
| Stock | : IN-Stock |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity F
| CAT No. | : CS-O-15235 |
| Mol F. | : C20H22N8O5 |
| Mol W. | : 454.4 g/mol |
| Cas No. | : 51865-79-3 |
| Stock | : IN-Stock |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity G
| CAT No. | : CS-EO-00339 |
| Mol F. | : C₂₈H₂₉N₉O₆ |
| Mol W. | : 587.59 g/mol |
| Cas No. | : Not Available |
| Stock | : IN-Stock |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity H
| CAT No. | : CS-T-32162 |
| Mol F. | : C21H24N8O5 |
| Mol W. | : 468.5 g/mol |
| Cas No. | : 67022-39-3 |
| Stock | : IN-Stock |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity I
| CAT No. | : CS-T-32161 |
| Mol F. | : C₂₁H₂₄N₈O₅ |
| Mol W. | : 468.47 g/mol |
| Cas No. | : 66147-29-3 |
| Stock | : IN-Stock |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity J
| CAT No. | : CS-T-32157 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 34378-65-9 |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate EP Impurity L
| CAT No. | : CS-T-33045 |
| Mol F. | : C13H16N2O5 |
| Mol W. | : 280.3 g/mol |
| Cas No. | : 52980-68-4 |
| Stock | : Enquire |
METHOTREXATE API STANDARDS, API STANDARDS
Methotrexate hydrate
| CAT No. | : CS-EK-01959 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 59-05-2 anhydrous base |
| Stock | : Enquire |
METHOTREXATE BIOCHEMICALS, BIOCHEMICALS
Methotrexate Hydrate (MTR), 98%
| CAT No. | : CS-SR-00349 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 133073-73-1 |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate Nitroso Impurity 1
| CAT No. | : CS-O-42526 |
| Mol F. | : C21H21N9O6Na2 |
| Mol W. | : 495.5 : 2 (23.0) g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
Methotrexate Nitroso Impurity 1
| CAT No. | : CS-O-46621 |
| Mol F. | : C21H23N9O6 |
| Mol W. | : 497.46 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate Pentaglutamate-13C5, 15N
| CAT No. | : CS-T-100077 |
| Mol F. | : C35¹³C5H50N11¹5NO17 |
| Mol W. | : 976.85 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE SECONDARY STANDARDS, SECONDARY STANDARDS
Methotrexate Related Compound B(Secondary Standards traceble to USP)
| CAT No. | : CS-ER-01318 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 54-62-6 |
| Stock | : Enquire |
METHOTREXATE USP STANDARDS, USP STANDARDS
Methotrexate Related Compound C (R083F0)
| CAT No. | : CS-EB-01327 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 2410-93-7 |
| Stock | : Enquire |
METHOTREXATE SECONDARY STANDARDS, SECONDARY STANDARDS
Methotrexate Related Compound C(Secondary Standards traceble to USP)
| CAT No. | : CS-ER-01319 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 2410-93-7 |
| Stock | : Enquire |
METHOTREXATE USP STANDARDS, USP STANDARDS
Methotrexate Related Compound E (G0L541)
| CAT No. | : CS-EB-01328 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 70844-48-3 |
| Stock | : Enquire |
METHOTREXATE SECONDARY STANDARDS, SECONDARY STANDARDS
Methotrexate Related Compound E(Secondary Standards traceble to USP)
| CAT No. | : CS-ER-01320 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 70844-48-3 |
| Stock | : Enquire |
METHOTREXATE API STANDARDS, API STANDARDS
Methotrexate sodium
| CAT No. | : CS-O-01873 |
| Mol F. | : C20H21N8NaO5 |
| Mol W. | : 476.43 g/mol |
| Cas No. | : Not Available |
| Stock | : IN-Stock |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate-d3 (100ug/mL in Methanol with 1% 0.1N NaOH)
| CAT No. | : CS-T-103177 |
| Mol F. | : C20H19D3N8O5 |
| Mol W. | : 457.46 g/mol |
| Cas No. | : 59-05-2(Unlabelled) |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate-d3 Diglutamate TFA Sulfate
| CAT No. | : CS-T-97328 |
| Mol F. | : C25H26D3N9O8 • x(C2HF3O2) |
| Mol W. | : 586.58 + x(114.02) + x(98.07) g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate-d3 Dimethyl Ester
| CAT No. | : CS-T-80367 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 432545-60-3 |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate-d3 Heptaglutamate Trifluoroacetate
| CAT No. | : CS-T-97329 |
| Mol F. | : C50H61D3N14O23 xC2HF3O2 |
| Mol W. | : 1232.142 (free amine) g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate-d3 Hexaglutamate Trifluoroacetic Acid Salt
| CAT No. | : CS-T-97324 |
| Mol F. | : C45H54D3N13O20 • x(C 2HF3O2) |
| Mol W. | : 1103.03 + x(114.02) g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate-d3 Pentaglutamate Trifluoroacetate
| CAT No. | : CS-T-97325 |
| Mol F. | : C40H47D3N12O17 • (C 2HF3O2)? |
| Mol W. | : 973.93 + x (114.02) g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate-d3 Tetraglutamate Trifluoroacetate
| CAT No. | : CS-T-97326 |
| Mol F. | : C35H40D3N11O14•(C2HF3O2)? |
| Mol W. | : 844.80 (free amine) g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE STABLE ISOTOPES, STABLE ISOTOPES
Methotrexate-d3 Triglutamate Trifluoroacetate
| CAT No. | : CS-T-97327 |
| Mol F. | : C30H33D3N10O11 (C2HF3O2)? |
| Mol W. | : 715.69 (free amine) g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE INTERMEDIATES, INTERMEDIATES
N-(5-Aminopentyl) Methotrexate Amide
| CAT No. | : CS-T-03230 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 136672-64-5 |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N, N-Dinitroso Methotrexate EP Impurity L
| CAT No. | : CS-O-42522 |
| Mol F. | : C13H14N4O7 |
| Mol W. | : 338.3 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N-Desmethyl Methotrexate dinitroso impurity
| CAT No. | : CS-O-46622 |
| Mol F. | : C20H20N10O7 |
| Mol W. | : 512.44 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N-Dinitroso Methotrexate Impurity 2
| CAT No. | : CS-O-46625 |
| Mol F. | : C17H22N4O7 |
| Mol W. | : 394.38 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N-Nitroso diethyl ester Methotrexate EP Impurity-L
| CAT No. | : CS-O-45484 |
| Mol F. | : C17H23N3O6 |
| Mol W. | : 365.38 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE NITROSAMINE, NITROSAMINE
N-Nitroso Methotrexate
| CAT No. | : CS-O-48907 |
| Mol F. | : C20H21N9O6 |
| Mol W. | : 483.45 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N-Nitroso Methotrexate EP Impurity-B
| CAT No. | : CS-O-42525 |
| Mol F. | : C19H19N9O6 |
| Mol W. | : 469.4 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N-Nitroso Methotrexate EP Impurity-L (1)
| CAT No. | : CS-O-42524 |
| Mol F. | : C13H15N3O6 |
| Mol W. | : 309.27 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N-Nitroso Methotrexate EP Impurity-L (2)
| CAT No. | : CS-O-42523 |
| Mol F. | : C13H15N3O6 |
| Mol W. | : 309.27 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N-nitroso Methotrexate Ethylester impurity
| CAT No. | : CS-O-46627 |
| Mol F. | : C24H29N9O6 |
| Mol W. | : 539.54 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
N-nitroso Methotrexate Impurity 2
| CAT No. | : CS-O-46624 |
| Mol F. | : C17H23N3O6 |
| Mol W. | : 365.38 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE NITROSAMINE, NITROSAMINE
N-nitrosobenzamido Methotrexate Impurity 2
| CAT No. | : CS-O-46626 |
| Mol F. | : C17H23N3O6 |
| Mol W. | : 365.38 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE IMPURITIES, IMPURITIES
R-Methotrexate di sodium
| CAT No. | : CS-O-48393 |
| Mol F. | : C20H20N8Na2O5 |
| Mol W. | : 498.4 g/mol |
| Cas No. | : Not Available |
| Stock | : Enquire |
METHOTREXATE SECONDARY STANDARDS, SECONDARY STANDARDS
R-Methotrexate(Secondary Standards traceble to USP)
| CAT No. | : CS-ER-01316 |
| Mol F. | : Not Available |
| Mol W. | : Not Available |
| Cas No. | : 59-05-2 |
| Stock | : Enquire |