1,3-Dioxolane-2-propanoic acid, 2-(phenylmethyl)-, methyl ester 68084-00-4 EINECS 268-414-6 Methyl 2-benzyl-1,3-dioxolane-2-propionate Methyl 4-ethylenedioxy-5-phenylvalerate Methyl-4-ethylenedioxy-5-phenylvalerate