| enantiomerism | In chemistry, isomerism in which the molecules in their configuration are related to one another like an object and its mirror image (enantiomers), and consequently are not superimposable; enantiomerism entails optical activity, both enantiomers rotating the plane of polarised light equally, but in opposite directions. (05 Mar 2000) |
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| enantiomerism |
the relationship between two stereoisomers having molecules that are mirror images of each other. Enantiomers have identical chemical and physical properties in an achiral environment. However, they form different products when reacted with other chiral molecules, and they exhibit optical activity. The enantiomer that rotates the plane of polarization of a beam of polarized light in the clockwise direction is indicated by the prefix (+)-, formerly d- or dextro-. The other enantiomer rotates the plane of polarization an equal amount in the counterclockwise direction and is indicated by the prefix (-)-, formerly l- or levo-. Two conventions are used to designate the actual configurations of enantiomers. The D, L system (see D-) is used to denote the configuration of carbohydrates relative to D-(+)-glyceraldehyde and of amino acids relative to L-(-)-serine. The R,S system (see R-) is a more general system used to specify the absolute configuration at every asymmetric carbon atom. An equimolar mixture of enantiomers (a racemic form or racemic modification) is optically inactive and is designated by the prefixes (±)-, DL-, or dl-.
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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