1,8-Diethyl-1,3,4,9-tetrahydro-6-hydroxypyrano(3,4-b)indole-1-acetic acid 101901-06-8 BRN 6430398 CCRIS 5403 Pyrano(3,4-b)indole-1-acetic acid, 1,3,4,9-tetrahydro-1,8-diethyl-6-hydroxy- RAK-901