2-tert-Butyl-10-(3-dimethylaminopropyl)phenothiazine-5-oxide monooxalate salt 63834-16-2 Phenothiazine, 2-tert-butyl-10-(3-dimethylaminopropyl)-, 5-oxide, monooxalate salt Phenothiazine-5-oxide, 2-tert-butyl-10-(3-dimethylaminopropyl)-, monooxalate