Metformin EP Impurity E

1-Methyl Biguanide Sulfate ;|Metformin EP Impurity E ; Metformin USP RC B ; N-Desmethyl Metformin Hemisulfate Monohydrate ; 1-Methyl Biguanide Hemisulfate Monohydrate ;|Metformin EP Impurity E;|Metformin Impurity E (1-Methylbiguanide) Sulfate|Metformin USP RC B ;|N-Desmethyl Metformin Sulfate ;|N-Desmethylmetformin Sulfate|N-Methyl-imidodicarbonimidic diamide, sulfate (1:1)|N-Methylimidodicarbonimidic Diamide Sulfate;