Pharmaceutical Reference Standards / Impurity Standards

2,8-Dimethyl-5-[2-(6-methylpyridin-3-yl)ethyl]-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole 2-oxide
2,3,4,5-Tetrahydro-8-methyl-5-[2-(6-methylpyridin-3-yl)ethyl]-1H-pyrido[4,3-b]indole
5-[2-(1,2,3,4-Tetrahydro-2,8-dimethyl-5H-pyrido[4,3-b]indol-5-yl)ethyl]-2-pyridinecarboxylic acid