Determination of all-trans- and 13-cis-retinoic acids by two-phase, two-dimensional thin-layer chromatography in creams and by high-performance thin-layer chromatography in gel formulations.
D002855:Chromatography, Thin Layer / Q000379:methods; D005782:Gels / Q000032:analysis; D015474:Isotretinoin; D009824:Ointments / Q000032:analysis; D013237:Stereoisomerism; D014212:Tretinoin / Q000032:analysis*
D005782:Gels; D009824:Ointments; D014212:Tretinoin; D015474:Isotretinoin