Synonyms: SK AND F-94836;SKF 94836;N-CYANO-N'-METHYL-N'-[4-(1,4,5,6-TETRAHYDRO-4-METHYL-6-OXO-3-PYRIDAZINYL)PHENYL]GUANIDINE;N-Cyano-Nmethyl-Nⅱ-[4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl]guanidine;Siguazodan, N-Cyano-Nμ-methyl-N-[4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl]guanidine;Siguazodan (SKF 94836);1-cyano-2-methyl-3-[4-(4-methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl]guanidine