5-(Cyclopentylacetyl)-6-methyl-5H-1,3-dioxolo(4,5-f)indole-7-acetic acid 50416-37-0 5H-1,3-DIOXOLO(4,5-f)INDOLE-7-ACETIC ACID, 5-(CYCLOPENTYLACETYL)-6-METHYL- BRN 1037945