2-(4-Methyl-1-piperazinyl)-10-methyl-3,4-diazaphenoxazine-7-sulfonic acid 5-Methyl-3-(4-methyl-1-piperazinyl)-5H-pyridazino(3,4-b)(1,4)benzoxazine-8-sulfonic acid 5H-Pyridazino(3,4-b)(1,4)benzoxazine-8-sulfonic acid, 5-methyl-3-(4-methyl-1-piperazinyl)- 62522-05-8 BRN 1046501