Preparative scale, normal phase liquid chromatography has been used to puri
fy the major components of three dental monomers, Araldite GY281, BisGMA, a
nd Cyacure(TM) UVR-6105. A silica column and a mobile phase consisting of a
mixture of CH2Cl2 and ethyl acetate were used. Reverse phase HPLC with UV
detection and proton NMR were used to analyze the raw materials and the pur
ified compounds. The purified materials are being used in toxicology testin
g and metabolic studies.