(1-Methylhexahydroazepinylidene-2)dicyanodiamide 114898-96-3 BRN 5530038 Guanidine, N-cyano-N'-(hexahydro-1-methyl-2H-azepin-2-ylidene)- N-Cyano-N'-(hexahydro-1-methyl-2H-azepin-2-ylidene)guanidine