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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Losartan, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Losartan impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Losartan-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Losartan Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Des[2’-(1H-tetrazol-5-yl)] 2-Cyanolosartan Carboxaldehyde-D3 Stable Isotopes CS-T-96813 Not Available Enquire
Des[2’-(1H-tetrazol-5-yl)] 2-Cyanolosartan-D3 Stable Isotopes CS-T-96814 Not Available Enquire
Losartan acid D6 hydrochloride Stable Isotopes CS-BU-00055 Not Available Enquire
Losartan azide D4 Stable Isotopes CS-O-56722 727718-93-6(Unlabelled) Enquire
Losartan azide-d8 Stable Isotopes CS-O-40065 Not Available Enquire
Losartan Carboxaldehyde-d3 Stable Isotopes CS-T-101177 1184999-26-5 Enquire
Losartan Carboxylic acid-d4 Stable Isotopes CS-O-06731 1246820-62-1 In Stock
Losartan D3 Stable Isotopes CS-T-57300 1030936-74-3 Enquire
Losartan N2-Glucuronide-d4 Stable Isotopes CS-T-98439 Not Available Enquire
Losartan-d2 Stable Isotopes CS-O-02734 1030936-22-1 In Stock
Losartan-d3 Carboxylic Acid Stable Isotopes CS-T-57301 1189729-40-5 Enquire
Losartan-d4 Stable Isotopes CS-O-02637 1030937-27-9 In Stock
Losartan-d9 Stable Isotopes CS-B-00297 114798-26-4 (unlabeled) Enquire
N-Trityl Losartan-d3 Carboxylic Acid Stable Isotopes CS-T-101995 Not Available Enquire
N-Trityl Losartan-d4 Carboxaldehyde Stable Isotopes CS-T-102890 133910-00-6(Unlabelled) Enquire
Trityl-Losartan D4 Stable Isotopes CS-Y-00101 1309283-24-6 Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Losartan API Standards CS-O-10833 114798-26-4 In Stock
Losartan Potassium API Standards CS-O-01767 124750-99-8 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Losartan Carboxylic Acid Metabolites CS-O-10324 124750-92-1 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-Acetyl-6-iodo-1H-indazole Impurities CS-O-40131 850363-52-9 Enquire
2-butyl-5-chloro-1H-imidazole-4-carbaldehyde, potassium salt Impurities CS-O-48814 1207475-08-8 Enquire
4-(4-Bromomethylphenyl)benzonitrile Impurities CS-O-40092 50670-51-4 Enquire
5-Iodo-2-methylphenol Impurities CS-T-94041 183803-06-7 Enquire
Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan Impurities CS-T-16636 114772-55-3 In Stock
Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan Carboxaldehyde Impurities CS-T-16638 124750-67-0 In Stock
Losartan a-Butyl-losartan Aldehyde Adduct Impurities CS-T-57302 1159977-48-6 Enquire
Losartan Acetyloxy Impurity Impurities CS-O-15333 253678-97-6 Enquire
Losartan Acetyloxy N1-Trityl Impurity Impurities CS-O-15336 154709-17-8 Enquire
Losartan Azide impurity Impurities CS-O-35717 727718-93-6 In Stock
Losartan Azide Nitrile Impurities CS-O-56724 2755908-48-4 Enquire
Losartan Dimer Azide Impurities CS-EO-02121 2755908-51-9 Enquire
Losartan EP Impurity B Impurities CS-O-11950 160514-13-6 Enquire
Losartan EP Impurity C Impurities CS-K-00233 114799-13-2 In Stock
Losartan EP Impurity E Impurities CS-O-11951 120568-11-8 In Stock
Losartan EP Impurity F Impurities CS-O-15329 1332713-64-0 In Stock
Losartan EP Impurity L Impurities CS-T-57305 230971-71-8 In Stock
Losartan EP Impurity M Impurities CS-O-15331 230971-72-9 In Stock
Losartan Hydroxy N1-Trityl Impurity Impurities CS-O-15337 154709-18-9 Enquire
Losartan Imidazo[1,5-b]isoquinoline Impurity Impurities CS-T-57304 165276-38-0 Enquire
Losartan Impurity 29 Impurities CS-EO-03663 1190000-72-6 Enquire
Losartan Impurity 7 Impurities CS-T-88429 358685-13-9 Enquire
Losartan N1-Trityl Impurity Impurities CS-O-15330 124751-00-4 In Stock
Losartan Potassium EP Impurity A Impurities CS-T-09345 79047-41-9 Enquire
Losartan Potassium EP Impurity C Impurities CS-T-31272 860644-28-6 In Stock
Losartan Potassium EP Impurity H Impurities CS-T-62580 133909-99-6 In Stock
Losartan Potassium EP Impurity J Impurities CS-T-47310 1006062-27-6 In Stock
Losartan Potassium EP Impurity K Impurities CS-T-31265 114798-36-6 In Stock
Losartan Related Compound D Impurities CS-O-36027 212316-86-4 In Stock
Losartan Related Compound E Impurities CS-O-36028 212316-88-6 Enquire
Losartan Trityl Methyl Ether Impurity Impurities CS-O-07513 596-31-6 Enquire
Nitroso Losartan Impurities CS-O-35910 Not Available Enquire
N-Trityl Losartan Carboxaldehyde Impurities CS-T-62581 133910-00-6 Enquire
N-Trityl Losartan Carboxylic Acid Impurities CS-T-45965 960231-60-1 Enquire
N-Trityl Losartan Isomer Impurities CS-T-45961 150098-04-7 Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Losartan for system suitability (Y0001076) EP Standards CS-EG-02921 Not Available Enquire
Losartan potassium (Y0001062) EP Standards CS-EG-02959 124750-99-8 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
ω-1-Hydroxy Losartan Intermediates CS-T-56163 141675-57-2 Enquire
2-Butyl-4-chloro-5-formylimidazole Intermediates CS-O-31530 83857-96-9 In Stock
2-Butyl-5-chloro-1H-Imidazole Intermediates CS-T-09341 158365-99-2 In Stock
4'-methyl-[1,1'-biphenyl]-2-carbonitrile Intermediates CS-T-33298 114772-53-1 In Stock
5-Deshydroxymethyl-5-chloro Losartan Intermediates CS-T-52157 1159977-26-0 Enquire
Deshydroxymethyl Losartan Trifluoroacetic Acid Salt Intermediates CS-T-52158 1215727-33-5 Enquire
Losartan Trityl Ether Intermediates CS-T-57303 1006062-28-7 In Stock
N-1-Ethoxyethyl Losartan Carboxaldehyde Intermediates CS-T-22366 165276-40-4 Enquire
N-1-Ethoxyethyl Losartan Carboxylic Acid Intermediates CS-T-22367 165276-41-5 Enquire
N-Trityl-deshydroxymethyl Losartan Intermediates CS-T-88136 1797133-13-1 Enquire
ω-3-Hydroxy Losartan Intermediates CS-T-79242 141675-59-4 Enquire


Glucuronides

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Losartan acyl-Beta-D-Glucuronide Glucuronides CS-O-05703 1799830-02-6 In Stock
Losartan N1-Beta-D-Glucuronide Glucuronides CS-O-07894 138584-34-6 In Stock
Losartan N2-β-D-glucuronide Glucuronides CS-O-30518 138584-35-7 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Chlorotriphenylmethane Fine Chemicals CS-T-62568 76-83-5 In Stock
Losartan Impurity 12 Fine Chemicals CS-O-39650 2353190-33-5 Enquire