EINECS 212-069-6, (1-Methyl-propyliden)-malonsaeure-aethylester-nitril, Ethyl 2-cyano-3-methylpent-2-ene-1-oate, 2-Methyl-buten-(1)-dicarbonsaeure-(1.1)-aethylester-nitril, ethyl 2-cyano-3-methyl-2-pentanoate, 2-cyano-3-methyl-pent-2-enoic acid ethyl ester, (1-Methylpropyliden)cyanessigsaeure-ethylester, 2-Cyan-3-methyl-pent-2-ensaeure-aethylester