... , steroids and macromolecule organic polymer).4, chemical intermediate products (polymerization PTMEG, natural gas odorants); chromatography solvent (gel permeation chromatography).5, ... azocyclotin suspension, erythromycin ethyl succinate, acrylic urethane, tramadol hydrochloride, Quinestrol, norethindrone, levonorgestrel, mifepristone.7, chromatography solvent. Such as gel permeation chromatography. ...