1-(3-Methyl-4-isothiazolyl)methylenethiosemicarbazide 3-Methylisothiazole-4-carboxaldehyde thiosemicarbazone 3683-57-6 BRN 0515833 ISOTHIAZOLE-4-CARBOXALDEHYDE, 3-METHYL-, THIOSEMICARBAZONE Thiosemicarbazide, 1-(3-methyl-4-isothiazolyl)methylene-