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Merck

61188

Losartan potassium

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:
329759382
MDL number:
MFCD02092704
Beilstein/REAXYS Number:
5845770

Key Documents

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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

SMILES string

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

InChI key

OXCMYAYHXIHQOA-UHFFFAOYSA-N

form

powder or crystals

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

impurities

≤0.5% water

application(s)

forensics and toxicology
pharmaceutical (small molecule)
veterinary

Quality Level

200

Gene Information

human ... AGTR1(185)

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General description

Losartan potassium has long lasting effects, and its efficacy is generally increased, when combined with the diuretic co-active hydrochlorothiazide.
Losartan potassium is an antihypertensive drug that is found to be an angiotensin II receptor type 1 blocker. It finds applications in reducing mechanical stress thereby having a control over the condition of cardiac hypertrophy.

Application

Losartan potassium may be used as an analytical reference standard for the quantification of the analyte in the following:
  • Pharmaceutical formulations using reversed-phase high-performance liquid chromatography and UV-spectrophotometric techniques.
  • Rat plasma using liquid chromatography–tandem mass spectrometry (LC–MS/MS) technique.

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

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

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
0000525084
0000525084
0000401300
0000401300
0000336842

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Michael D Kim et al.
ERJ open research, 7(1) (2021-02-04)
The aim was to determine whether losartan reduces cigarette smoke (CS)-induced airway inflammation and mucus hypersecretion in an in vitro model and a small clinical trial. Primary human bronchial epithelial cells (HBECs) were differentiated at the air-liquid interface (ALI) and
Simultaneous determination of losartan and hydrochlorothiazide in tablets by high-performance liquid chromatography
Carlucci G, et al.
Journal of Pharmaceutical and Biomedical Analysis, 23(1), 185-189 (2000)
Christopher J Haddock et al.
American journal of physiology. Regulatory, integrative and comparative physiology, 318(6), R1027-R1035 (2020-04-16)
There are examples of physiological conditions under which thirst is inappropriately exaggerated, and the mechanisms for these paradoxical ingestive behaviors remain unknown. We are interested in thirst mechanisms across the female life cycle and have identified a novel mechanism through
Development and validation of a stability-indicating HPLC method for the simultaneous determination of Losartan potassium, hydrochlorothiazide, and their degradation products.
Hertzog DL, et al.
Journal of Pharmaceutical and Biomedical Analysis, 30(3), 747-760 (2002)
Spectrophotometric and HPLC methods for simultaneous estimation of amlodipine besilate, losartan potassium and hydrochlorothiazide in tablets.
Wankhede SB, et al.
Indian Journal of Pharmaceutical Sciences, 72(1), 136-136 (2010)
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