The HPLC analytical method for ATRA in vitro was developed. The solubilities of ATRA in water and PBS with different pH and the apparent partition coefficient in n-octyl alcohol/ water was determined by HPLC. The HPLC method for the content of ATRA in liposomes was established. The entrapment efficiency of ATRA liposome was determined by microcolumn centrifuge-HPLC method.
The ATRA liposome was prepared by ethanol injection method. The single factor investigation and the orthogonal design were adopted t...