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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
4-Deschloro-4-Hydroxymethyl, 5-Deshydroxymethyl-5-Chloro Los... Stable Isotopes CS-T-101176 Not Available Enquire
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 azide D4 Stable Isotopes CS-O-56722 727718-93-6(Unlabelled) 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 D6 HCl Stable Isotopes CS-O-46927 Not Available 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-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
Losartan acid D6 hydrochloride Stable Isotopes CS-BU-00055 Not Available Enquire
Losartan azide-d8 Stable Isotopes CS-O-40065 Not Available Enquire
Losartan D3 Stable Isotopes CS-T-57300 1030936-74-3 Enquire
Losartan-d3 Carboxylic Acid Stable Isotopes CS-T-57301 1189729-40-5 Enquire
Trityl-Losartan D4 Stable Isotopes CS-Y-00101 1309283-24-6 Enquire


API

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


Metabolite

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


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-butyl-5-chloro-1H-imidazole-4-carbaldehyde, potassium salt Impurity CS-O-48814 1207475-08-8 Enquire
5-[2-(4-methylphenyl)phenyl]-1-trityltetrazole Impurity CS-T-45970 124750-53-4 In Stock
Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan Impurity CS-T-16636 114772-55-3 In Stock
Des[2-(1H-tetrazol-5-yl)] 2-Cyanolosartan Carboxaldehyde Impurity CS-T-16638 124750-67-0 In Stock
Losartan Azide impurity Impurity CS-O-35717 727718-93-6 In Stock
Losartan Azide Nitrile Impurity CS-O-56724 2755908-48-4 Enquire
Losartan Dimer Azide Impurity CS-EO-02121 2755908-51-9 Enquire
Losartan EP Impurity C Impurity CS-K-00233 114799-13-2 In Stock
Losartan EP Impurity E Impurity CS-O-11951 120568-11-8 In Stock
Losartan EP Impurity F Impurity CS-O-15329 1332713-64-0 In Stock
Losartan EP Impurity L Impurity CS-T-57305 230971-71-8 In Stock
Losartan EP Impurity M Impurity CS-O-15331 230971-72-9 In Stock
Losartan Impurity 12 Impurity CS-O-39650 2353190-33-5 Enquire
Losartan Impurity 29 Impurity CS-EO-03663 1190000-72-6 Enquire
Losartan Impurity 30 Impurity CS-EO-03210 2204369-11-7 Enquire
Losartan isocyano Impurity Impurity CS-O-43165 Not Available Enquire
Losartan N1-Trityl Impurity Impurity CS-O-15330 124751-00-4 In Stock
Losartan Potassium EP Impurity C Impurity CS-T-31272 860644-28-6 In Stock
Losartan Potassium EP Impurity H Impurity CS-T-62580 133909-99-6 In Stock
Losartan Potassium EP Impurity J Impurity CS-T-47310 1006062-27-6 In Stock
Losartan Potassium EP Impurity K Impurity CS-T-31265 114798-36-6 In Stock
Losartan Related Compound D Impurity CS-O-36027 212316-86-4 In Stock
Losartan Trityl Methyl Ether Impurity Impurity CS-O-07513 596-31-6 Enquire
1-Acetyl-6-iodo-1H-indazole Impurity CS-O-40131 850363-52-9 Enquire
2'-(1H-Tetrazol-5-yl)-1,1'-biphenyl-4-carboxaldehyde Impurity CS-T-61968 151052-40-3 Enquire
4'-((2-butyl-4,5-dichloro-1H-imidazol-1-yl)methyl)-[1,1'-bip... Impurity CS-O-39361 Not Available Enquire
5-Iodo-2-methylphenol Impurity CS-T-94041 183803-06-7 Enquire
Losartan a-Butyl-losartan Aldehyde Adduct Impurity CS-T-57302 1159977-48-6 Enquire
Losartan Acetyloxy Impurity Impurity CS-O-15333 253678-97-6 Enquire
Losartan Acetyloxy N1-Trityl Impurity Impurity CS-O-15336 154709-17-8 Enquire
Losartan Amine Impurity CS-EO-01398 141949-89-5 Enquire
Losartan EP Impurity B Impurity CS-O-11950 160514-13-6 Enquire
Losartan Hydroxy N1-Trityl Impurity Impurity CS-O-15337 154709-18-9 Enquire
Losartan Imidazo[1,5-b]isoquinoline Impurity Impurity CS-T-57304 165276-38-0 Enquire
Losartan Impurity 1 Impurity CS-EO-01623 Not Available Enquire
Losartan Impurity 15 Impurity CS-EO-01662 Not Available Enquire
Losartan Impurity 4 Impurity CS-EO-01343 Not Available Enquire
Losartan Impurity 5 Impurity CS-EO-01341 Not Available Enquire
Losartan Impurity 6 Impurity CS-EO-01342 Not Available Enquire
Losartan Impurity 7 Impurity CS-T-88429 358685-13-9 Enquire
Losartan Impurity 8 Impurity CS-EO-01661 Not Available Enquire
Losartan Potassium EP Impurity A Impurity CS-T-09345 79047-41-9 Enquire
Losartan Related Compound E Impurity CS-O-36028 212316-88-6 Enquire
N-Trityl Losartan Carboxaldehyde Impurity CS-T-62581 133910-00-6 Enquire
N-Trityl Losartan Carboxylic Acid Impurity CS-T-45965 960231-60-1 Enquire
N-Trityl Losartan Isomer Impurity CS-T-45961 150098-04-7 Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Losartan for testing the suitability of the chromatographic ... EP Standards CS-EG-03310 Not Available Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Butyl-4-chloro-5-formylimidazole Intermediate CS-O-31530 83857-96-9 In Stock
2-Butyl-5-chloro-1H-Imidazole Intermediate CS-T-09341 158365-99-2 In Stock
4,4-Diamino-3,3,5,5-tetramethyl-biphenyl Intermediate CS-U-00140 54827-17-7 In Stock
4'-methyl-[1,1'-biphenyl]-2-carbonitrile Intermediate CS-T-33298 114772-53-1 In Stock
Losartan Trityl Ether Intermediate CS-T-57303 1006062-28-7 In Stock


Glucuronide

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


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Nitroso Losartan Nitrosamine CS-O-35910 Not Available Enquire
((2-Butyl-4-chloro-1-((2`-(1-nitroso-1H-tetrazol-5-yl)-[1,1`... Nitrosamine CS-O-40295 Not Available Enquire
(2-butyl-4-chloro-1-nitroso-1H-imidazole-5-yl)methanol Nitrosamine CS-O-40296 Not Available Enquire