In the present application when no specific mention is made of {HEAD ~ the configuration} of a compound {TAIL ~ then a mixture} of such isomers, or either one of the isomers is intended 
In the present application when no specific mention is made of { HEAD ~ the configuration } of a compound { TAIL ~ then a mixture } of such isomers , or either one of the isomers is intended
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH