(+-)-(2E,4E)-3,7,11-Trimethyl-2,4-dodecadienoyl chloride (E,E)-(1)-3,7,11-Trimethyldodeca-2,4-dienoyl chloride 118313-67-0 2,4-Dodecadienoyl chloride, 3,7,11-trimethyl-, (2E,4E)- 58223-34-0 EINECS 261-171-7