In certain embodiments, {HEAD ~ the ω halo 1,2 alkanediol} is {TAIL ~ a 3 halo 1,2 propanediol} 
In certain embodiments , { HEAD ~ the ω halo 1,2 alkanediol } is { TAIL ~ a 3 halo 1,2 propanediol }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL