Pharmaceutical Reference Standards / Impurity Standards

Metformin Hydrochloride
Metformin Hydrochloride
Metformin Hydrochloride -Traceable to IP
Metformin EP Impurity A
Metformin
Metformin EP Impurity D
Metformin EP Impurity C
Metformin Impurity E sulfate
Metformin Impurity E (HCL salt) Metformin RC B(USP)
Metformin Impurity E
Metformin EP Impurity B Hydrochloride
Metformin EP Impurity B
Metformin Hydroxy Analog 2 (sulfuiric acid Salt)
Metformin Hydroxy Analog 2
Metformin Hydroxy Analog 1
Metformin(Nitrate Salt)-Impurity B
N-(N,N-Dimethyl carbamoyl)guanidine hydrochloride
Metformin Pamoate
3-Carbamimidoyl-1,1-Dimethylurea Hydrochloride
Didesmethyl Metformin Hydroxy Analog Hydrochloride
N-Nitroso Metformin
Guanylurea Sulfate
N-Ethyl-N-methylimidodicarbonimidic diamide
Guanidine,N,N```-(6-amino-1,3,5-triazine-2,4-diyl)bis
Metformin Impurity 5
N-(N-(N-(N,N-Dimethylcarbamimidoyl)carbamimidoyl)carbamimidoyl)carbamimidoylamine
N-Nitroso Metformin EP Impurity A
1,1-Dimethylguanidine sulfate (2:1)
4-(3-carbamimidoylguanidino)benzoic acid
Nitrosocarbamylcyanomethane
N-Nitroso Metformin Impurity 1
N-Nitroso Metformin Impurity 2

Isotope Labelled Compounds

Metformin-D6 Hydrochloride
Melamine-13C3