5351-90-6 Hydrazinecarbothioamide, 2-[(2-hydroxyphenyl)methylene]- NSC201642 Salicylaldehyde thiosemicarbazone Salicylaldehyde, thiosemicarbazone Salicylic aldehyde thiosemicarbazone WLN: SUYZMNU1R BQ o-Hydroxybenzaldehyde thiosemicarbazone