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USP

Famotidine Related Compound B

United States Pharmacopeia (USP) Reference Standard

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Synonym(s):
N,N′′′-[(1,1-Dioxido-2H-1,2,4,6-thiatriazine-3,5-diyl)bis(2,1-ethanediylthiomethylene-4,2-thiazolediyl)]bisguanidine, 3,5-Bis[2-[[[2-[(diaminomethylene)amino]thiazol-4-yl]methyl]sulphanyl]ethyl]-4H-1,2,4,6-thiatriazine 1,1-dioxide
Empirical Formula (Hill Notation):
C16H23N11O2S5
CAS Number:
Molecular Weight:
561.75
UNSPSC Code:
41116107
NACRES:
NA.24

biological source

synthetic

grade

pharmaceutical primary standard

Agency

USP

API family

famotidine

form

powder

packaging

pkg of 25 mg

manufacturer/tradename

USP

storage condition

protect from light

color

yellow to white

solubility

water: soluble

application(s)

pharmaceutical (small molecule)

format

neat

InChI

1S/C16H23N11O2S5/c17-13(18)24-15-21-9(7-32-15)5-30-3-1-11-23-12(27-34(28,29)26-11)2-4-31-6-10-8-33-16(22-10)25-14(19)20/h7-8H,1-6H2,(H,23,26,27)(H4,17,18,21,24)(H4,19,20,22,25)

InChI key

NRRXZFHNRLQONH-UHFFFAOYSA-N

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General description

Famotidine Related Compound B (Famotidine Impurity B) is an impurity of famotidine, which is a hydrophilic, cationic, histamine H2 receptor antagonist drug that effectively inhibits gastric acid secretion in humans.

Application

Famotidine Related Compound B can be used as a pharmaceutical primary standard for the determination of the analyte in pharmaceutical formulations by various analytical techniques.

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.  ​

Other Notes

Sales restrictions may apply.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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High-performance thin-layer chromatography for the determination of ranitidine hydrochloride and famotidine in pharmaceuticals.
Novakovic J.
Journal of Chromatography A, 846(1-2), 193-198 (1999)
Famotidine
Pharmacopeia, US
United States Pharmacopeia, 39(1)(1-2), 1815-1815 (2020)
Capillary zone electrophoresis method for the determination of famotidine and related impurities in pharmaceuticals
Helali N, et al.
Talanta, 74(4) (2008)
RP-HPLC determination of famotidine and its potential impurities in pharmaceuticals
Helali N, et al.
Chromatographia, 60(7-8) (2004)
Potentiometric determination of famotidine in pharmaceutical formulations
Ayad MM, et al.
Journal of Pharmaceutical and Biomedical Analysis, 29(1-2) (2002)

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