4-Pentenoic acid, 3-hydroxy-3-methyl-5-(2,6,6-trimethyl-2-cyclohexen-1-yl)-, butyl ester 72727-71-0 Butyl 3-hydroxy-3-methyl-5-(2,6,6-trimethyl-2-cyclohexen-1-yl)pent-4-en-1-oate Butyl 5-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-hydroxy-3-methyl-4-pentenoate EINECS 276-804-2