Category
Famotidine
CAS Number
Famotidine STD-76824-35-6: IMP-A-124646-10-2;88061-72-7(DiHCl Salt);76833-47-1(HCl Salt): IMP-B-89268-62-2: IMP-C-106433-44-7; 76824-17-4(HCl Salt): IMP-D-76824-16-3; 2469195-46-6(HCl Salt): IMP-F-107880-74-0: IMP-G-76823-97-7
Molecular Formula
Famotidine STD-C8H15N7O2S3: IMP-A-C8H14N6S2: IMP-B-C16H23N11O2S5: IMP-C-C8H14N6O3S3: IMP-D-C8H13N5OS2: IMP-F-C8H12N4O2S2: IMP-G-C9H13N7S2
Molecular Weight
Famotidine STD-337.45: IMP-A-258.36: IMP-B-561.76: IMP-C-338.43: IMP-D-259.35: IMP-F-260.34: IMP-G-283.38
Synonym

Famotidine STD-3-[[[2-[(Aminoiminomethyl)amino]-4-thiazolyl]methyl]thio]-N-(aminosulfonyl)propanimidamide; N-(Aminosulfonyl)-3-[[[2-[(diaminomethylene)amino]-4-thiazolyl]methyl] thio]propanimidamide; Amfamox; Antodine; Famodin; Famosan; Ganor; Lecedil; Mosul; Motiax; Ulfamid; Propanimidamide, N'-(aminosulfonyl)-3-[[[2-[(diaminomethylene)amino]-4-thiazolyl]methyl]thio]-; 3-[[2-(Diaminomethyleneamino)thiazol-4-yl]methylthio]-N'-sulfamoylpropanimidamide (USP); 3-[[2-(diaminomethylideneamino)-1,3-thiazol-4-yl]methylsulfanyl]-N'-sulfamoylpropanimidamide

Famotidine EP-Impurity-A-3-[[[2-[(Diaminomethylidene)amino]thiazol-4-yl]methyl]sulfanyl]propanimidamide; 3-(((2-((Diaminomethylene)amino)thiazol-4-yl)methyl)thio)propanimidamide; Famotidine amidine (USP)

Famotidine EP-Impurity-B-3,5-Bis[2-[[[2-[(diaminomethylidene)amino]thiazol-4-yl]methyl]sulfanyl]ethyl]-4H-1,2,4,6-thiatriazine 1,1-dioxide

Famotidine EP-Impurity-C-[3-[[[2-(Diaminomethyleneamino)-4-thiazolyl]methyl]thio]propionyl]sulfamide; 3-(((2-((Diaminomethylene)amino)thiazol-4-yl)methyl)thio)-N-sulfamoylpropanamide

Famotidine EP-Impurity-D-3-[[[2-[(Diaminomethylidene)amino]thiazol-4-yl]methyl]sulfanyl]propanamide; 3-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]sulphanyl]propanamide

Famotidine EP-Impurity-F-3-[[[2-[(Aminoiminomethyl)amino]-4-thiazolyl]methyl]thio]propanoic Acid; Famotidine Acid Impurity; 3-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]thio]propanoic Acid; 3-[[2-(Diaminomethyleneamino)thiazol-4-yl]methylthio]propanoic acid

Famotidine EP-Impurity-G-3-[[[2-[(Aminoiminomethyl)amino]-4-thiazolyl]methyl]thio]-N-cyanopropanimidamide; N-Desaminosulfonyl-N-cyano Famotidine;Famotidine cyanoamidine, N-Cyano-3-[[2-(diaminomethyleneamino)thiazol-4-yl]methylthio]propanimidamide; (USP)

Keywords
Intermediates
Heterocycles
Pharmaceutical Standards
Amines
Fine Chemicals
sulphur and selenium compounds
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Famotidine System Suitability CRS is a certified reference standard used in pharmaceutical analysis to verify the performance of an analytical system, typically in HPLC or related chromatographic methods. It ensures that the system is capable of producing reliable and reproducible results by checking parameters such as resolution, peak shape, and retention time before sample analysis. Using the CRS helps confirm method validity and compliance with pharmacopeial requirements.