1-Cyclohexen-1-yl diethyl phosphate 1-Cyclohexen-1-yl ethyl phosphate 4-06-00-00195 (Beilstein Handbook Reference) 4452-32-8 AI3-25692 BRN 2051993 ENT 25,692 NSC 106092 Phosphoric acid, 1-cyclohexen-1-yl diethyl ester SD 2218 Shell SD-2218