Further, the elimination of extraneous material and the fractionation of mixtures of {HEAD ~ molecular species} into {TAIL ~ the constituent species} has resulted in achieving significantly greater potency and repeatability in the resulting products than was possessed by the prior materials 
into
Further , the elimination of extraneous material and the fractionation of mixtures of { HEAD ~ molecular species } into { TAIL ~ the constituent species } has resulted in achieving significantly greater potency and repeatability in the resulting products than was possessed by the prior materials
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH