53228-20-9 63849-66-1 9004-94-8 PEG-18 Palmitate PEG-20 Palmitate PEG-6 Palmitate Poly(oxy-1,2-ethanediyl), alpha-(1-oxohexadecyl)-omega-hydroxy- Polyethylene glycol (18) monopalmitate Polyethylene glycol 1000 monopalmitate Polyethylene glycol 300 monopalmitate Polyethyleneglycol palmitate Polyoxyethylene (18) monopalmitate Polyoxyethylene (20) monopalmitate Polyoxyethylene (6) monopalmitate alpha-(1-Oxohexadecyl)-omega-hydroxypoly(oxy-1,2-ethanediyl)