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This study compared the evaporation and skin absorption profiles of four fragrance chemicals in in vitro skin penetration studies performed in conditions of airflows of low velocity with and without trapping of the evaporated volatiles. The presence of a trapping chamber above the skin surface slowed down the evaporation of the chemicals, possibly due to formation of a gaseous stagnant layer of greater...
Novel esters of optically active p-substituted mandelic acids (+)-1 and (+)-2 were prepared by a convergent synthetic strategy in high enantiomeric excess (99% ee). The esters (+)-1 and (+)-2 induce helical macrostructures in the mesophases of achiral liquid-crystal materials, although neither exhibits mesorphism on its own.
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