1-Nitro-3-amino-4-hydroxybenzene 2-Amino-4-nitrophenol 2-Hydroxy-5-nitroaniline 3-Amino-4-hydroxynitrobenzene 4-Nitro-2-aminofenol 4-Nitro-2-aminophenol 99-57-0 C.I. 76530 NCI-C55958 NSC4664 Phenol, 2-amino-4-nitro- WLN: ZR BQ ENW p-Nitro-o-aminophenol