11H-1,2,4-Triazolo(4',3':2,3)pyridazino(4,5-b)indole, 6-chloro-3-methyl- 6-Chloro-3-methyl-11H-1,2,4-triazolo(4',3':2,3)pyridazino(4,5-b)indole 80985-63-3 BRN 4493446