polo188Structure of Poloxamer 188, with two hydrophilic ends and a hydrophobic core in the middle. Currently, available literature depicts that P188 has a half-life of 18 hours after injection inParteck® PLX 188 (Poloxamer 188) CAS 9003-11-6 (stabilized with 70ppm BHT) EMPROVE® ESSENTIAL Ph Eur,ChP,NF - Find MSDS or SDS, a COA, data sheets and more information.