1,7,8,9-Tetrahydro-5-methoxypyrano(2,3-g)indole 5-Methoxy-7,8,9-trihydro-pyranno(2,3-g)indole [French] 81257-95-6 Pyrano(2,3-g)indole, 1,7,8,9-tetrahydro-5-methoxy-