114914-43-1 2,4,6,8-Nonatetraenoic acid, 3,7-dimethyl-9-(2,3,6-trichloro-4-methoxyphenyl)-, ethyl ester, (all-E)- Ethyl 3,7-dimethyl-9-(2,3,6-trichloro-4-methoxyphenyl)-2,4,6,8-nonatetraenoate (all-E)- Ro 11-8284 Ro 118284