(E)-2-(12-Tetradecen-9-yn-1-yloxy)tetrahydropyran (E)-Tetrahydro-2-(12-tetradecen-9-ynyloxy)-2H-pyran 2H-Pyran, tetrahydro-2-((12E)-12-tetradecen-9-ynyloxy)- 68516-29-0 EINECS 271-143-6