2-Methyl-4-((5-methyl-5H-1,2,4-triazino(5,6-b)indol-3-yl)amino)-2-butanol 20154-25-0 3-(3-Hydroxy-3-methylbutylamino)-5-methyl-as-triazino(5,6-b)indole SK&F 30097 Skf 30097