1189-87-3 4-04-00-03528 (Beilstein Handbook Reference) BRN 1754192 Ethylphosphonofluoridic acid isopropyl ester GE Isopropoxy-ethyl-phosphoryl fluoride Isopropoxy-ethylphosphonofluoridate Phosphonofluoridic acid, ethyl-, isopropyl ester