Other:2-amino 4-nitrophenol, Meta aminophenol, Para aminophenol, Meta diethyl amino-phenol:2-amino-1-phenol-4-sulphonic acid, 6-nitro-o aminophenol-4-sulphonic acid, Phenyl gamma acid (phenyl 2-amino-naphthol-6-sulphonic acid), Phenyl J acid (phenyl-2-amino-8 naphthol-7sulphonic acid), S acid, peri acid (1-amino-8naphthol-4-4-sulphoxinic acid, 1-naphthylamine8-sulphonic acid), Meta-phenyle ne diamine-4sulphonic acid:N-methyl-para-aminophenol sulphate (motol), 2,5 dimethoxy aniline, Para acetyl aminophenol (paracetamol), Para cresidine, Picramic acid (Tgrade):Meta-phenylene diamine-4-sulphonic acid.