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Merck
CN

1370462

USP

Losartan potassium

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

2-Butyl-4-chloro-1-{[2′-(1H-tetrazol-5-yl)(1,1′-biphenyl)-4-yl]methyl}-1H-imidazole-5-methanol monopotassium salt, 2-butyl-4-chloro-1-[[2′-(2H-tetrazol-5-yl)[1,1′-biphenyl]-4-yl]methyl]- 1H-Imidazole-5-methanol potassium salt, DuP 753, MK 954, Potassium 5-(4′-((2-butyl-4-chloro-5-(hydroxymethyl)-1H-imidazol-1-yl)methyl)-[1,1′-biphenyl]-2-yl)tetrazol-1-ide

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About This Item

Empirical Formula (Hill Notation):
C22H22ClKN6O
CAS Number:
124750-99-8
Molecular Weight:
461.00
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329750264
MDL number:
MFCD02092704
Beilstein/REAXYS Number:
5845770

Key Documents

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Product Name

Losartan potassium, United States Pharmacopeia (USP) Reference Standard

InChI key

OXCMYAYHXIHQOA-UHFFFAOYSA-N

SMILES string

CCCCc1nc(Cl)c(CO)n1Cc2ccc(cc2)-c3ccccc3-c4nnnn4[K]

InChI

1S/C22H22ClN6O.K/c1-2-3-8-20-24-21(23)19(14-30)29(20)13-15-9-11-16(12-10-15)17-6-4-5-7-18(17)22-25-27-28-26-22;/h4-7,9-12,30H,2-3,8,13-14H2,1H3;/q-1;+1

grade

pharmaceutical primary standard

API family

losartan

manufacturer/tradename

USP

application(s)

pharmaceutical (small molecule)

format

neat

Gene Information

human ... AGTR1(185)

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Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Application

Losartan potassium USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as:
  • Losartan Potassium and Hydrochlorothiazide Tablets
  • Losartan Potassium Tablets

Biochem/physiol Actions

Losartan potassium is an orally available, potent, and selective competitive angiotensin II receptor type 1 (AT1) antagonist. Losartan potassium is used for treatment of hypertension.
orally available, potent, and selective competitive angiotensin II receptor type 1 (AT1) antagonist

General description

Losartan potassium is a new drug used for hypertension. It is nonpeptide angiotensin II (AII) receptor antagonist.
Losartan potassium is nonpeptide angiotensin II (AII) receptor antagonist and is orally active. It belongs to a new class of drugs introduced for clinical trials to treat hypertension.

Other Notes

Sales restrictions may apply.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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D M Dorfman et al.
The Journal of biological chemistry, 267(2), 1279-1285 (1992-01-15)
Previously, we showed that the promoter of the gene encoding preproendothelin-1 (PPET-1) contains a GATA motif that is essential for activity and interacts with a nuclear factor similar in size and binding specificity to the erythroid transcription factor GATA-1. To
Quantification of losartan and its metabolite in rat urine
Prolina, OG, et al.
Bulletin of Moscow University, 53.3, 194-197 (2012)
M Burnier et al.
Journal of hypertension. Supplement : official journal of the International Society of Hypertension, 13(1), S23-S28 (1995-07-01)
The evaluation of a new drug in normotensive volunteers provides important pharmacodynamic and pharmacokinetic information as long as the compound has a specific mechanism of action which can be evaluated in healthy subjects as well as in patients. The purpose
L M Burrell
Drug safety, 16(1), 56-65 (1997-01-01)
Losartan potassium is the first of a new class of orally active antihypertensive drugs which antagonise the action of angiotensin (AT) II at the AT1 receptor subtype. Losartan potassium is converted by the liver to the active metabolite E-3174, which
Tetsuhiro Kakimoto et al.
The Journal of endocrinology, 222(1), 43-51 (2014-05-02)
Diabetic nephropathy is a major complication in diabetes and a leading cause of end-stage renal failure. Glomerular podocytes are functionally and structurally injured early in diabetic nephropathy. A non-obese type 2 diabetes model, the spontaneously diabetic Torii (SDT) rat, is
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