3H-Phenoxazin-3-one, 7-hydroxy-, 10-oxide 550-82-3 7-Hydroxy-3H-phenoxazin-3-one 10-oxide Azoresorcin Diazoresorcinol NSC56323 Resazoin Resazurin Resazurine WLN: T C666 BN FV IOJ BO LQ