The present invention relates to new types of processes for the improved preparation of homofarnesol, in particular of (3E,7E)-homofarnesol and homofarnesol preparations with an increased content of (3E,7E)-homofarnesol (also referred to as all E-homofarnesol).

The present invention is directed to .sup.13C-labelled chlorinated paraffins, preferably having neither geminal nor terminal chlorine atoms in their structure, processes for their preparation as well as their uses.

The present invention is directed to .sup.13C-labelled chlorinated paraffins, preferably having neither geminal nor terminal chlorine atoms in their structure, processes for their preparation as well as their uses.