2-Amino-3-oxo-3H-phenoxazin-1,9-dicarboxylic acid 2-Amino-3H-phenoxazin-one-1,9-dicarboxylic acid 3H-Phenoxazin-1,9-dicarboxylic acid, 2-amino-3-oxo- 606-59-7 Cinnabarinic acid