Racemoramide

Racemoramide

Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken

     

бумажная книга



Издательство: Книга по требованию
Дата выхода: июль 2011
ISBN: 978-6-1309-4923-5
Объём: 88 страниц
Масса: 153 г
Размеры(В x Ш x Т), см: 23 x 16 x 1

High Quality Content by WIKIPEDIA articles! Racemoramide is a racemic mixture of the drugs dextromoramide and levomoramide, two enantiomers of a chiral molecule. In chemistry, a racemic mixture, or racemate, is one that has equal amounts of left- and right-handed enantiomers of a chiral molecule. The first known racemic mixture was "racemic acid," which Louis Pasteur found to be a mixture of the two enantiomeric isomers of tartaric acid. A racemate is optically inactive, meaning that there is no net rotation of plane-polarized light. Although the two enantiomers rotate plane-polarized light in opposite directions, because they are present in equal amounts, the rotations cancel. 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. Different melting points and solubilities are very common, but different boiling points are also possible. Pharmaceuticals may be available as a racemate or as the pure enantiomer, which might have different potencies.

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