1,2,3,6-Tetrahydropyridine694-05-3100 % similar 3-Pyrroline109-96-653 % similar 1,5-Cyclooctadiene111-78-433 % similar 1,5-Cyclooctadiene1552-12-133 % similar 1,5,9-Cyclododecatriene4904-61-433 % similar Trans,trans,trans-1,5,9-cyclododecatriene676-22-233 % similar Cyclododecatriene706-31-033 % similar