60655-28-9 DL-Phenylalanine, 4-(2-(diethylamino)ethoxy)-3-ethoxy-, ethyl ester, dioxalate DL-Tyrosine, O-(2-(diethylamino)ethyl)-3-ethoxy-, ethyl ester, ethanedioate (1:2) O-(2-(Diethylamino)ethyl)-3-ethoxy-DL-tyrosine ethyl ester ethanedioate (1:2) SLB-887