3-Methylisothiazole-5-carboxaldehyde 4,4-dimethylthiosemicarbazone 3683-50-9 4,4-Dimethyl-1-(3-methyl-5-isothiazolyl)thiosemicarbazide BRN 0522743 ISOTHIAZOLE-5-CARBOXALDEHYDE, 3-METHYL-, 4,4-DIMETHYLTHIOSEMICARBAZONE Thiosemicarbazide, 4,4-dimethyl-1-(3-methyl-5-isothiazolyl)-