ethyl 5-cyano-5-(2,3-difluorophenyl)pentanoate
(2S,4Z)-2-tert-butoxycarbonylamino-5-cyano-5-(2,3-difluorophenyl)pent-4-enoic acid
(2S,4Z)-2-tert-butoxycarbonylamino-5-cyano-5-(2,3-difluorophenyl)pent-4-enoic acid ethyl ester
(2S,4Z)-2-tert-butoxycarbonylamino-5-cyano-5-(2,3-difluorophenyl)pent-4-enoic acid methyl ester
rac-2-(2,3-difluoro-phenyl)-propionitrile