{HEAD ~ Compounds} of Formula 9, where A is an alkenyl group having one or more double bonds can be made for example, by synthetic schemes well known to the practicing organic chemist; for example by Wittig and like reactions, or by introduction of a double bond by elimination of halogen from an alpha halo arylalkyl carboxylic acid, {TAIL ~ ester} or like carboxaldehyde 
{ HEAD ~ Compounds } of Formula 9 , where A is an alkenyl group having one or more double bonds can be made for example , by synthetic schemes well known to the practicing organic chemist ; for example by Wittig and like reactions , or by introduction of a double bond by elimination of halogen from an alpha halo arylalkyl carboxylic acid , { TAIL ~ ester } or like carboxaldehyde
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH