4(5)-Acetyl-9,9-dimethyltricyclo-[4,4,0,1.sup.8,10 ]-undec-1-ene
4-(2'-Norbornyl)-2-butanones
4-(2,2,3-trimethylcyclopent-3-en-1-yl)-but-3-en-1-ols, methods f
4-(2-Bornyloxy)-2-butyn-1-ol and organoleptic uses thereof
4-Hydroxy-2,4,6,6-tetramethyl cyclohex-2-en-1-one perfume compos