4-Nitrobenzaldehyde thiosemicarbazone 5470-48-4 Benzaldehyde, p-nitro-, thiosemicarbazone Hydrazinecarbothioamide, 2-[(4-nitrophenyl)methylene]- NSC27486 WLN: WNR D1UNMYZUS p-Nitrobenzaldehyde thiosemicarbazone