Famotidine Impurity C HydrochlorideFamotidine 3-(((2-((diaminomethylidene)amino)-1,3-thiazol-4-yl)methyl)sulfanyl)-N-sulfamoylpropanamide hydrochloride

Famotidine Impurity F HydrochlorideFamotidine 3-(((2-((diaminomethylidene)amino)-1,3-thiazol-4-yl)methyl)sulfanyl)propanoic acid hydrochloride

famotidine sulfoxide MaleateFamotidine 3-[[2-(Diaminomethyleneamino)thiazol-4-yl]methylsulfinyl]-N′-sulfamoylpropanimidamide (free base)

Doxylamine Impurity CDoxylamine N,N-dimethyl-2-((1RS)-1-phenyl-1-(pyridin-2-yl)methoxy)ethanamine

dropropizineDropropizine 3-(4-Phenyl-1-piperazinyl)-1,2-propanediol

Ephedrine HydrochlorideEphedrine (1R,2S)-(-)-ephedrine hydrochloride

Doxylamine Impurity A sesquisuccinateDoxylamine N,N-dimethyl-2-((1RS)-1-phenyl-1-(pyridin-4-yl)ethoxy)ethanamine sesquisuccinate

Doxylamine Impurity B HydrochlorideDoxylamine (RS)-1-phenyl-1-(pyridin-2-yl)ethanol hydrochloride

Doxylamine Impurity DDoxylamine phenyl(pyridin-2-yl)methanone

Diphenoxylate Impurity A HydrochlorideDiphenoxylate difenoxin hydrochloride