2-Pentenedioic acid, 4-(3,7-dimethyloctylidene)-3-methyl-, disodiumsalt, (2Z,4E)- 68516-33-6 Disodium (Z,E)-(.+-)-4-(3,7-dimethyloctylidene)-3-methylpent-2-en-1,5-dioate EINECS 271-147-8