2-Amino-5-nitrophenol was used: . as starting material in the synthesis of series of (Z)-2-(substituted aryl)-N-(3-oxo-4-(substituted carbamothioyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-7-yl) hydrazine carboxamides . as semipermanent (nonoxidative) hair colorant and as toner in permanent (oxidative) hair dye products ? in synthesis of series of 7-benzylamino-2H-1,4-benzoxazin-3(4H)-ones, anticonvulsant agents Reactant for: . Diazotation and coupling reactions . Preparation of biologically and pharmacologically active molecules 2-Amino-5-nitrophenol was used: . as starting material in the synthesis of series of (Z)-2-(substituted aryl)-N-(3-oxo-4-(substituted carbamothioyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-7-yl) hydrazine carboxamides . as semipermanent (nonoxidative) hair colorant and as toner in permanent (oxidative) hair dye products ? in synthesis of series of 7-benzylamino-2H-1,4-benzoxazin-3(4H)-ones, anticonvulsant agents Reactant for: . Diazotation and coupling reactions . Preparation of biologically and pharmacologically active molecules