英文别名Etodolac impurity E; Etodolac EP Impurity E; (1-ethyl-8-propyl-1,3,4,9-tetrahydro-pyrano[3,4-b]indol-1-yl)-acetic acid; 2-(1-ethyl-8-propyl-4,9-dihydro-3H-pyrano[3,4-b]indol-1-yl)acetic acid; Pyrano[3,4-b]indole-1-acetic acid, 1-ethyl-1,3,4,9-tetrahydro-8-propyl- 
