cimetidine and its Impurities
Cimetidine is sold under the brand name Tagamet among others, is a histamine H2 receptor antagonist that inhibits stomach acid production. It is used to inhibit stomach acid production and is used in the treatment of heartburn and peptic ulcers.. Reference standards of Cimetidine API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below


N-Cyano-3-(cyanoamino)-N'-methyl-7,8-dithia-2,4,11-triazadodec-2-en-12-imidamide-D6 (Cimetidine Impurity)
N-Cyano-3-(cyanoamino)-N'-methyl-7,8-dithia-2,4,11-triazadodec-2-en-12-imidamide-D6 (Cimetidine Impurity)
Catalogue No.:PA STI 023510
CAS :
NA
Molecular Formula : C10H12D6N8S2
Molecular Weight : 320.47


(E,E)-1,1'-((((5-Methyl-1H-imidazole-2,4-diyl)bis(methylene))bis(sulfanediyl))bis(ethane-2,1-diyl))bis(2-cyano-3-methylguanidine)
(E,E)-1,1'-((((5-Methyl-1H-imidazole-2,4-diyl)bis(methylene))bis(sulfanediyl))bis(ethane-2,1-diyl))bis(2-cyano-3-methylguanidine)
Catalogue No.:PA 56 0661000
CAS :
182685-55-8
Molecular Formula : C16H26N10S2
Molecular Weight : 422.57


(E)-2-Cyano-1-methyl-3-(2-(((5-methyl-1-((5-methyl-1H-imidazol-4-yl)methyl)-1H-imidazol-4-yl)methyl)thio)ethyl)guanidine
(E)-2-Cyano-1-methyl-3-(2-(((5-methyl-1-((5-methyl-1H-imidazol-4-yl)methyl)-1H-imidazol-4-yl)methyl)thio)ethyl)guanidine
Catalogue No.:PA 56 0661001
CAS :
NA
Molecular Formula : C15H22N8S
Molecular Weight : 346.46