10-Phenyl-3-nitrophenothiazine-5-oxide 10H-Phenothiazine, 3-nitro-10-phenyl-, 5-oxide 3-Nitro-10-phenyl-10H-phenothiazine 5-oxide 4-27-00-01337 (Beilstein Handbook Reference) 63185-29-5 BRN 0038251