for the following products
1-Cyano-2-methyl-1-[2-(5-methylimidazol-4-yl-methylthio)ethyl]iso-thio urea | N-Cyano-N'-2-[(5-methyl-1H-imidazol-4-yl)methylthio]ethyl-S-methylisothiourea | S-Methyl and N-Cyano-N-[2-(5-methylimidazole-4-methylthio)ethyl]-S-methylisothiourea
