To explore the independence of functional group contributions to permeability of nonelectrolytes across egg lecithin bilayers, the transport rates were measured of a series of alpha-substituted p-methylhippuric acids (-H, -Cl, -OCH3, -CN, -OH, -COOH, and -CONH2) across egg lecithin lipid
Journal of pharmaceutical sciences, 91(3), 640-646 (2002-03-29)
The barrier domain solubility-diffusion theory of lipid bilayer permeability relates the permeability coefficient (P(m)) to the solute's partition coefficient (PC(barrier/w)) and diffusion coefficient (D(barrier)) in the ordered chain region of the bilayer that serves as the barrier region for polar
British journal of industrial medicine, 38(3), 304-306 (1981-08-01)
The separation of hippuric and m-methylhippuric acid as toluene and m-xylene metabolites present in urine of people exposed simultaneously to toluene and xylene is described. Chloroform was used for hippuric and m-methylhippuric acid extraction. Satisfactory separation of these metabolites was
Measurement of exposure to xylenes by separate determination of m- and p-methylhippuric acids in urine.
M Morin et al.
Journal of chromatography, 210(2), 346-349 (1981-06-05)
International archives of occupational and environmental health, 64(7), 533-539 (1993-01-01)
The correlation between exposure to three xylene isomers and resulting urinary excretion of corresponding methylhippuric acid (MHA) isomers was studied among 175 Chinese workers of both sexes who had been predominantly exposed to xylenes (exposure to xylenes accounting for 70%
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