Pharmaceuticals may be available as a racemate or as the pure enantiomer, which might have different potencies. Different melting points and solubilities are very common, but different boiling points are also possible. Racemoramide is a racemic mixture of the drugs dextromoramide and levomoramide, two enantiomers of a chiral molecule. A racemate is optically inactive, meaning that there is no net rotation of plane-polarized light. High Quality Content by WIKIPEDIA articles! The first known racemic mixture was "racemic acid," which Louis Pasteur found to be a mixture of the two enantiomeric isomers of tartaric acid. Although the two enantiomers rotate plane-polarized light in opposite directions, because they are present in equal amounts, the rotations cancel. In chemistry, a racemic mixture, or racemate, is one that has equal amounts of left- and right-handed enantiomers of a chiral molecule. In contrast to the two pure enantiomers, which have identical physical properties except for the direction of rotation of plane-polarized light, a racemate often has different properties from either of the pure enantiomers.
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Lambert M. S.
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Набор мисок "Mayer & Boch". Набор эмалированных мисок из 10 предметов: миска (5 штук) + крышка (5 штук).
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