guanidines Metformin metformin 1,1-Dimethylbiguanide 6809 A guanidine that has formula C4H11N5. C4H11N5 CHEBI:6801 CN(C)C(=N)NC(N)=N ChemIDplus:657-24-9 InChI=1S/C4H11N5/c1-9(2)4(7)8-3(5)6/h1-2H3,(H5,5,6,7,8) InChIKey=XZWYZXLIPXDOLR-UHFFFAOYSA-N KEGG COMPOUND:657-24-9 KEGG COMPOUND:C07151 Metformin N,N-dimethylimidodicarbonimidic diamide Wikipedia:Metformin