1-Methyl Biguanide SulfateMetformin EP Impurity E Sulfate Price Not Available 1mg 1-Methyl Biguanide SulfateMetformin EP Impurity E Sulfate Supplier Page Catalog Number R032027 Molecular Formula C3H11N5O4S CAS# 36801-25-9 Purity ≥95% Inchi InChI=1S/C3H9N5.H2O4S/c1-7-3(6)8-2(4)5;1-5(2,3)4/h1H3,(H6,4,5,6,7,8);(H2,1,2,3,4) Inchi Key BQDFZVWCDAKAAR-UHFFFAOYSA-N SMILES CN=C(N)N=C(N)N.OS(=O)(=O)O Size 1mg Supplier Page https://www.musechem.com/product/R032027.html