2,4-Diphenylbutyric acid 2-(diethylamino)ethyl ester 2-(Diethylamino)ethyl 2,4-diphenylbutyrate 3-09-00-03356 (Beilstein Handbook Reference) 77985-15-0 BRN 2602837 BUTYRIC ACID, 2,4-DIPHENYL-, 2-(DIETHYLAMINO)ETHYL ESTER