Ibuprofen Impurity KIbuprofen 2-(4-formylphenyl)propanoic acid

Flurbiprofen Impurity AFlurbiprofen (RS)-2-(biphenyl-4-yl)propanoic acid

Guaifenesin Impurity DGuaifenesin 1,3-bis(2-methoxyphenoxy)propan-2-ol

Guaifenesin Impurity BGuaifenesin 2-(2-methoxyphenoxy)propane-1,3-diol

1-(2-phenylethyl)piperidin-4-yl propanoate HydrochlorideFentanyl 1-(2-phenylethyl)piperidin-4-yl propanoate hydrochloride

Flecainide Impurity DFlecainide 2,5-bis(2,2,2-trifluoroethoxy)benzoic acid

Flecainide Impurity B dihydrochlorideFlecainide (RS)-2-aminomethylpiperidine dihydrochloride

Famotidine Impurity D Hydrochloride monohydrateFamotidine 3-(((2-((diaminomethylidene)amino)-1,3-thiazol-4-yl)methyl)sulfanyl)propanamide hydrochloride monohydrate

2-(4-(((2-(1,1-dioxido-3,4-dihydro-2H-1,2,4,6-thiatriazin-5- yl)ethyl)sulfanyl)methyl)-1,3-thiazol-2-yl)guanidine maleateFamotidine 2-(4-(((2-(1,1-dioxido-3,4-dihydro-2H-1,2,4,6-thiatriazin-5- yl)ethyl)sulfanyl)methyl)-1,3-thiazol-2-yl)guanidine maleate

2-(4-(((2-(3-methyl-1,1-dioxido-3,4-dihydro-2H-1,2,4,6-thiatriazin-5- yl)ethyl)sulfanyl)methyl)-1,3-thiazol-2-yl)guanidine maleateFamotidine 2-(4-(((2-(3-methyl-1,1-dioxido-3,4-dihydro-2H-1,2,4,6-thiatriazin-5- yl)ethyl)sulfanyl)methyl)-1,3-thiazol-2-yl)guanidine maleate