1,3,4,9-Tetrahydro-1-ethyl-pyrano[3,4-b]indole-1-acetic Acid Ethyl Ester is an intermediate in the synthesis of 8-Desethyl Etodolac (D289315). 8-Desethyl Etodolac (Etodolac EP Impurity A) is an impurity of Etodolac (E933100) which was examined for mutagenicity in reverse mutation tests on bacteria. Etodolac impurity A.
![1,3,4,9-Tetrahydro-1-ethyl-pyrano[3,4-b]indole-1-acetic Acid Ethyl Ester Structure](/CAS/20200611/GIF/111962-14-2.gif)