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Losartan and its related Impurities


Impurities in Losartan can arise during the manufacturing process or storage of the drug.


Last updated on 12-Mar-2023

The most common Losartan Impurities are listed below:


PRODUCT STRUCTURE

Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan

Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan


CAT No.: CS-T-16636

CAS Number: 114772-55-3

Category: Losartan Impurities

Molecular Formula: C₂₂H₂₂ClN₃O

Losartan Impurities

Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan Carboxaldehyde

Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan Carboxaldehyde


CAT No.: CS-T-16638

CAS Number: 124750-67-0

Category: Losartan Impurities

Molecular Formula: C₂₂H₂₀ClN₃O

Losartan Impurities

Losartan a-Butyl-losartan Aldehyde Adduct

Losartan a-Butyl-losartan Aldehyde Adduct


CAT No.: CS-T-57302

CAS Number: 1159977-48-6

Category: Losartan Impurities

Losartan Impurities

Losartan Acetyloxy Impurity

Losartan Acetyloxy Impurity


CAT No.: CS-O-15333

CAS Number: 253678-97-6

Category: Losartan Impurities

Losartan Impurities

Losartan Acetyloxy N1-Trityl Impurity

Losartan Acetyloxy N1-Trityl Impurity


CAT No.: CS-O-15336

CAS Number: 154709-17-8

Category: Losartan Impurities

Losartan Impurities

Losartan Amine

Losartan Amine


CAT No.: CS-EO-01398

CAS Number: 141949-89-5

Category: Losartan Impurities

Molecular Formula: C22H24ClN7

Losartan Impurities

Losartan Azide impurity

Losartan Azide impurity


CAT No.: CS-O-35717

CAS Number: 727718-93-6

Category: Losartan Impurities

Molecular Formula: C₂₂H₂₂ClN₉

Losartan Impurities

Losartan Dimer Azide

Losartan Dimer Azide


CAT No.: CS-EO-02121

CAS Number: 2755908-51-9

Category: Losartan Impurities

Molecular Formula: C44H43Cl2N15

Losartan Impurities

Losartan EP Impurity B

Losartan EP Impurity B


CAT No.: CS-O-11950

CAS Number: 160514-13-6

Category: Losartan Impurities

Losartan Impurities

Losartan EP Impurity C

Losartan EP Impurity C


CAT No.: CS-K-00233

CAS Number: 114799-13-2

Category: Losartan Impurities

Molecular Formula: 422.91 mol/g

Losartan Impurities

Losartan EP Impurity F

Losartan EP Impurity F


CAT No.: CS-O-15329

CAS Number: 1332713-64-0

Category: Losartan Impurities

Losartan Impurities

Losartan EP Impurity L

Losartan EP Impurity L


CAT No.: CS-T-57305

CAS Number: 230971-71-8

Category: Losartan Impurities

Molecular Formula: C₄₄H₄₄Cl₂N₁₂O

Losartan Impurities

Losartan EP Impurity M

Losartan EP Impurity M


CAT No.: CS-O-15331

CAS Number: 230971-72-9

Category: Losartan Impurities

Molecular Formula: C₄₄H₄₄Cl₂N₁₂O

Losartan Impurities

Losartan Hydroxy N1-Trityl Impurity

Losartan Hydroxy N1-Trityl Impurity


CAT No.: CS-O-15337

CAS Number: 154709-18-9

Category: Losartan Impurities

Losartan Impurities

Losartan Impurity 1

Losartan Impurity 1


CAT No.: CS-EO-01623

Category: Losartan Impurities

Molecular Formula: C22H21ClN6

Losartan Impurities

Losartan Impurity 15

Losartan Impurity 15


CAT No.: CS-EO-01662

Category: Losartan Impurities

Molecular Formula: C22H22ClN7O2

Losartan Impurities

Losartan Impurity 5

Losartan Impurity 5


CAT No.: CS-EO-01341

Category: Losartan Impurities

Molecular Formula: C22H21ClN6

Losartan Impurities

Losartan Impurity 6

Losartan Impurity 6


CAT No.: CS-EO-01342

Category: Losartan Impurities

Molecular Formula: C22H22ClN9

Losartan Impurities

Losartan Impurity 7

Losartan Impurity 7


CAT No.: CS-T-88429

CAS Number: 358685-13-9

Category: Losartan Impurities

Losartan Impurities

Losartan Impurity 8

Losartan Impurity 8


CAT No.: CS-EO-01661

Category: Losartan Impurities

Molecular Formula: C22H22ClN7O2

Losartan Impurities

Losartan isocyano Impurity

Losartan isocyano Impurity


CAT No.: CS-O-43165

Category: Losartan Impurities

Molecular Formula: C22H21ClN6

Losartan Impurities

Losartan N1-Trityl Impurity

Losartan N1-Trityl Impurity


CAT No.: CS-O-15330

CAS Number: 124751-00-4

Category: Losartan Impurities

Molecular Formula: C₄₁H₃₇ClN₆O

Losartan Impurities

Losartan Potassium EP Impurity A

Losartan Potassium EP Impurity A


CAT No.: CS-T-09345

CAS Number: 79047-41-9

Category: Losartan Impurities

Losartan Impurities

Losartan Potassium EP Impurity C

Losartan Potassium EP Impurity C


CAT No.: CS-T-31272

CAS Number: 860644-28-6

Category: Losartan Impurities

Molecular Formula: C₂₂H₂₃ClKN₆O

Losartan Impurities

Losartan Potassium EP Impurity E

Losartan Potassium EP Impurity E


CAT No.: CS-O-11951

CAS Number: 120568-11-8

Category: Losartan Impurities

Losartan Impurities

Losartan Potassium EP Impurity H

Losartan Potassium EP Impurity H


CAT No.: CS-T-62580

CAS Number: 133909-99-6

Category: Losartan Impurities

Molecular Formula: C₄₁H₃₇ClN₆O

Losartan Impurities

Losartan Potassium EP Impurity J

Losartan Potassium EP Impurity J


CAT No.: CS-T-47310

CAS Number: 1006062-27-6

Category: Losartan Impurities

Molecular Formula: C₂₄H₂₅ClN₆O₂

Losartan Impurities

Losartan Potassium EP Impurity K

Losartan Potassium EP Impurity K


CAT No.: CS-T-31265

CAS Number: 114798-36-6

Category: Losartan Impurities

Losartan Impurities

Losartan Related Compound D

Losartan Related Compound D


CAT No.: CS-O-36027

CAS Number: 212316-86-4

Category: Losartan Impurities

Molecular Formula: C44H43Cl2KN12O

Losartan Impurities

Losartan Related Compound E

Losartan Related Compound E


CAT No.: CS-O-36028

CAS Number: 212316-88-6

Category: Losartan Impurities

Molecular Formula: C44H43Cl2KN12O

Losartan Impurities

Nitroso Losartan

Nitroso Losartan


CAT No.: CS-O-35910

Category: Losartan Impurities

Molecular Formula: C₂₂H₂₂ClN₇O₂

Losartan Impurities

N-Trityl Losartan Carboxaldehyde

N-Trityl Losartan Carboxaldehyde


CAT No.: CS-T-62581

CAS Number: 133910-00-6

Category: Losartan Impurities

Losartan Impurities

N-Trityl Losartan Carboxylic Acid

N-Trityl Losartan Carboxylic Acid


CAT No.: CS-T-45965

CAS Number: 960231-60-1

Category: Losartan Impurities

Losartan Impurities

N-Trityl Losartan Isomer

N-Trityl Losartan Isomer


CAT No.: CS-T-45961

CAS Number: 150098-04-7

Category: Losartan Impurities

Losartan Impurities

"Losartan Imidazo[1,5-b]isoquinoline Impurity"

"Losartan Imidazo[1,5-b]isoquinoline Impurity"


CAT No.: CS-T-57304

CAS Number: 165276-38-0

Category: Losartan Impurities

Losartan Impurities

((2-Butyl-4-chloro-1-((2`-(1-nitroso-1H-tetrazol-5-yl)-[1,1`-biphenyl]-4-yl)methyl)-1H-imidazole-5-yl)methonol)

((2-Butyl-4-chloro-1-((2`-(1-nitroso-1H-tetrazol-5-yl)-[1,1`-biphenyl]-4-yl)methyl)-1H-imidazole-5-yl)methonol)


CAT No.: CS-O-40295

Category: Losartan Impurities

Molecular Formula: C29H30ClN7O4

Losartan Impurities

(2-butyl-4-chloro-1-nitroso-1H-imidazole-5-yl)methanol

(2-butyl-4-chloro-1-nitroso-1H-imidazole-5-yl)methanol


CAT No.: CS-O-40296

Category: Losartan Impurities

Molecular Formula: C8H12ClN3O2

Losartan Impurities

1-Acetyl-6-iodo-1H-indazole

1-Acetyl-6-iodo-1H-indazole


CAT No.: CS-O-40131

CAS Number: 850363-52-9

Category: Losartan Impurities

Molecular Formula: C9H7IN2O

Losartan Impurities

4-(4-Bromomethylphenyl)benzonitrile

4-(4-Bromomethylphenyl)benzonitrile


CAT No.: CS-O-40092

CAS Number: 50670-51-4

Category: Losartan Impurities

Molecular Formula: C14H10BrN

Losartan Impurities

5-Iodo-2-methylphenol

5-Iodo-2-methylphenol


CAT No.: CS-T-94041

CAS Number: 183803-06-7

Category: Losartan Impurities

Molecular Formula: C7H7IO

Losartan Impurities

Other Reference Standards of Losartan


PRODUCT STRUCTURE

Deshydroxymethyl Losartan Trifluoroacetic Acid Salt

Deshydroxymethyl Losartan Trifluoroacetic Acid Salt


CAT No.: CS-T-52158

Category: Intermediates

CAS Number: 1215727-33-5

Losartan

Losartan

Losartan


CAT No.: CS-O-10833

Category: API Standards

CAS Number: 114798-26-4

Molecular Formula: C₂₂H₂₃ClN₆O

Losartan

Losartan acid D6 hydrochloride

Losartan acid D6 hydrochloride


CAT No.: CS-BU-00055

Category: Stable Isotopes

Losartan

Losartan Acyl-β-D-glucuronide

Losartan Acyl-β-D-glucuronide


CAT No.: CS-O-05703

Category: Glucuronides

CAS Number: 1799830-02-6

Molecular Formula: C28H29ClN6O8

Losartan

Losartan azide-d8

Losartan azide-d8


CAT No.: CS-O-40065

Category: Stable Isotopes

Molecular Formula: C22H14D8ClN9

Losartan

Losartan carboxylic acid

Losartan carboxylic acid


CAT No.: CS-O-10324

Category: Metabolites

CAS Number: 124750-92-1

Molecular Formula: C₂₂H₂₁ClN₆O₂

Losartan

Losartan Carboxylic acid D4

Losartan Carboxylic acid D4


CAT No.: CS-O-06731

Category: Stable Isotopes

CAS Number: 1246820-62-1

Molecular Formula: C₂₂H₁₇D₄ClN₆O₂

Losartan

Losartan D2

Losartan D2


CAT No.: CS-O-02734

Category: Stable Isotopes

CAS Number: 1030936-22-1

Molecular Formula: C₂₂H₂₁D₂ClN₆O

Losartan

Losartan D3

Losartan D3


CAT No.: CS-T-57300

Category: Stable Isotopes

CAS Number: 1030936-74-3

Losartan

Losartan D4

Losartan D4


CAT No.: CS-O-02637

Category: Stable Isotopes

CAS Number: 1030937-27-9

Molecular Formula: C₂₂H₁₉D₄ClN₆O

Losartan

Losartan for system suitability (Y0001076)

Losartan for system suitability (Y0001076)


CAT No.: CS-EG-02921

Category: EP Standards

Molecular Formula: C22H23ClN6O

Losartan

Losartan impurity D (Y0001072)

Losartan impurity D (Y0001072)


CAT No.: CS-EG-02923

Category: EP Standards

CAS Number: 83857-96-9

Molecular Formula: C8H11ClN2O

Losartan

Losartan N1-Glucuronide

Losartan N1-Glucuronide


CAT No.: CS-O-07894

Category: Glucuronides

CAS Number: 138584-34-6

Molecular Formula: C28H3ClN6O7

Losartan

Losartan N2-glucuronide

Losartan N2-glucuronide


CAT No.: CS-P-05197

Category: Glucuronides

Losartan

Losartan N2-β-D-glucuronide

Losartan N2-β-D-glucuronide


CAT No.: CS-O-30518

Category: Glucuronides

CAS Number: 138584-35-7

Molecular Formula: C28H31ClN6O7

Losartan

Losartan potassium

Losartan potassium


CAT No.: CS-O-01767

Category: API Standards

CAS Number: 124750-99-8

Molecular Formula: C₂₂H₂₂ClKN₆O

Losartan

Losartan Potassium (H1M331)

Losartan Potassium (H1M331)


CAT No.: CS-EB-01226

Category: USP Standards

CAS Number: 124750-99-8

Losartan

Losartan potassium (Y0001062)

Losartan potassium (Y0001062)


CAT No.: CS-EG-02959

Category: EP Standards

CAS Number: 124750-99-8

Molecular Formula: C22H23ClKN6O

Losartan

Losartan Potassium(Secondary Standards traceble to USP)

Losartan Potassium(Secondary Standards traceble to USP)


CAT No.: CS-ER-01221

Category: Secondary Standards

CAS Number: 124750-99-8

Losartan

Losartan Related Compound A(Secondary Standards traceble to USP)

Losartan Related Compound A(Secondary Standards traceble to USP)


CAT No.: CS-ER-01222

Category: Secondary Standards

CAS Number: 83857-96-9

Losartan

Losartan Related Compound B(Secondary Standards traceble to USP)

Losartan Related Compound B(Secondary Standards traceble to USP)


CAT No.: CS-ER-01223

Category: Secondary Standards

CAS Number: 1006062-27-6

Losartan

Losartan Related Compound C(Secondary Standards traceble to USP)

Losartan Related Compound C(Secondary Standards traceble to USP)


CAT No.: CS-ER-01217

Category: Secondary Standards

CAS Number: 114798-36-6

Losartan

Losartan Related Compound D (F01160)

Losartan Related Compound D (F01160)


CAT No.: CS-EB-01230

Category: USP Standards

CAS Number: 212316-86-4

Molecular Formula: C44H43Cl2KN12O

Losartan

Losartan Related Compound D(Secondary Standards traceble to USP)

Losartan Related Compound D(Secondary Standards traceble to USP)


CAT No.: CS-ER-01218

Category: Secondary Standards

CAS Number: 212316-86-4

Losartan

Losartan Related Compound E (F01170)

Losartan Related Compound E (F01170)


CAT No.: CS-EB-01231

Category: USP Standards

CAS Number: 212316-88-6

Molecular Formula: C44H43Cl2KN12O

Losartan

Losartan Related Compound E(Secondary Standards traceble to USP)

Losartan Related Compound E(Secondary Standards traceble to USP)


CAT No.: CS-ER-01219

Category: Secondary Standards

CAS Number: 212316-88-6

Losartan

Losartan Trityl Ether

Losartan Trityl Ether


CAT No.: CS-T-57303

Category: Intermediates

CAS Number: 1006062-28-7

Losartan

Losartan-d3 Carboxylic Acid

Losartan-d3 Carboxylic Acid


CAT No.: CS-T-57301

Category: Stable Isotopes

CAS Number: 1189729-40-5

Losartan

N-1-Ethoxyethyl Losartan Carboxaldehyde

N-1-Ethoxyethyl Losartan Carboxaldehyde


CAT No.: CS-T-22366

Category: Intermediates

CAS Number: 165276-40-4

Losartan

N-1-Ethoxyethyl Losartan Carboxylic Acid

N-1-Ethoxyethyl Losartan Carboxylic Acid


CAT No.: CS-T-22367

Category: Intermediates

CAS Number: 165276-41-5

Losartan

N-Trityl-deshydroxymethyl Losartan

N-Trityl-deshydroxymethyl Losartan


CAT No.: CS-T-88136

Category: Intermediates

CAS Number: 1797133-13-1

Losartan

Trityl-Losartan D4

Trityl-Losartan D4


CAT No.: CS-Y-00101

Category: Stable Isotopes

CAS Number: 1309283-24-6

Losartan

ω-1-Hydroxy Losartan

ω-1-Hydroxy Losartan


CAT No.: CS-T-56163

Category: Intermediates

CAS Number: 141675-57-2

Losartan

2-Butyl-4-chloro-5-formylimidazole

2-Butyl-4-chloro-5-formylimidazole


CAT No.: CS-O-31530

Category: Intermediates

CAS Number: 83857-96-9

Molecular Formula: C₈H₁₁ClN₂O

Losartan

5-Deshydroxymethyl-5-chloro Losartan

5-Deshydroxymethyl-5-chloro Losartan


CAT No.: CS-T-52157

Category: Intermediates

CAS Number: 1159977-26-0

Losartan

ω-3-Hydroxy Losartan

ω-3-Hydroxy Losartan


CAT No.: CS-T-79242

Category: Intermediates

CAS Number: 141675-59-4

Losartan