Metformin EP Impurity A

1-Cyanoguanidine ;|1-cyanoguanidine;|125148-58-5; 139351-77-2; 139351-78-3;157480-33-6; Dcyandiamide.|Cyanoguanidine;|Dicyandiamide;|Metformin EP Impurity A ; Metformin USP RC A ; 1-Cyanoguanidine ;|Metformin EP Impurity A;|Metformin Related Compound A;|Metformin USP RC A ;|N-Cyano-Guanidine|N-cyanoguanidine;