title: [The relationship between percutaneous rate of drug and its HPLC retention behavior].
abstract: A series of 13 p-aminobenzoate esters were selected as model drugs to study correlations between HPLC retention parameters and percutaneous rate. The octanol/water partition coefficient and solubility of these compounds were determined and their permeation through rat skin was measured using a Franz diffusion cell. Capacity factor and retention index were used as HPLC retention parameters and calculated from their retention times. The results indicate that for the p-aminobenzoate esters studied, the capacity factors and retention indices obtained in our experimental conditions are indicators of relative lipophilicity of drugs and can be used to predict their steady-state fluxes and permeation coefficients by using the Hansch equation. They are easy to obtain and reproducible enough to substitute for the more laborious and inaccurate partition coefficient values.
authors: Zhejiang Branch, Hangzhou.
authors: D
authors: D
authors: Liang
mesh_terms: D010129:4-Aminobenzoic Acid / Q000493:pharmacokinetics; D000818:Animals; D002851:Chromatography, High Pressure Liquid; D008297:Male; D008433:Mathematics; D010539:Permeability; D051381:Rats; D011919:Rats, Inbred Strains; D012869:Skin Absorption; D062366:para-Aminobenzoates
chemical_list: D062366:para-Aminobenzoates; D010129:4-Aminobenzoic Acid