2-ethoxycarbonyl-2-methyl-4-(2,3,3-trimethyl-cyclopent-1-en-1-yl)buttersaeureethylester

1-(toluene-4-sulfonyloxy)-2-(2,3,3-trimethyl-cyclopent-1-enyl)-ethane

Cyclopentaneethanol, 2-hydroxy-2,3,3-trimethyl-

5-Hydroxy-1,8,8-trimethyl-2-oxabicyclo[3.3.0]octan-3-on

β-campholenbromid