4-14-00-02002 (Beilstein Handbook Reference) 4-Butylamino-2-ethoxy-benzoic acid 2-(diethylamino)ethyl ester 53352-75-3 BENZOIC ACID, 4-BUTYLAMINO-2-ETHOXY-, 2-(DIETHYLAMINO)ETHYL ESTER BRN 2144070 WIN 3713