2-Butenoic acid, 3-((dimethoxyphosphinyl)oxy)-, cyclohexylmethyl ester 64011-81-0 CROTONIC ACID, 3-HYDROXY-, CYCLOHEXYLMETHYL ESTER, DIMETHYL PHOSPHATE Cyclohexylmethyl 3-((dimethoxyphosphinyl)oxy)-2-butenoate ENT 25,625 SD 4281 Shell SD-4281