2-Butenoic acid, 2-methyl-, 3-methylpentyl ester, (2E)- 2-Butenoic acid, 2-methyl-, 3-methylpentyl ester, (E) 2-Butenoic acid, 2-methyl-, 3-methylpentyl ester, (E)- 3-Methylpentyl 2-methylcrotonate 61692-81-7 EINECS 262-904-3