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 (rā-sē′mĭk, -sĕm′ĭk, rə-)
Of or relating to a chemical mixture that contains equal quantities of dextrorotatory and levorotatory forms of a compound and therefore does not rotate the plane of incident polarized light.


(rəˈsiːmɪk; -ˈsɛm-) or


(Chemistry) chem of, concerned with, or being a mixture of equal amounts of enantiomers and consequently having no optical activity
[C19: from raceme (as in racemic acid) + -ic]
racemism n


(reɪˈsi mɪk, -ˈsɛm ɪk, rə-)

noting or pertaining to any of various organic compounds that are optically inactive but separable into dextrorotatory and levorotatory forms.
References in periodicals archive ?
In a natural or an achiral synthetic environment, you will get racemic mixtures.
Chiral Technologies, a leader in enantioselective chromatography, serves pharmaceutical and other life science industries and offers a portfolio of chiral stationary phases and analytical and preparative chiral columns for the separation of racemic mixtures into single enantiomers.
After the synthesis of suitable candidate compounds, we will apply them in the following research areas: a) the resolution of racemic mixtures by co-crystallization with chiral halogen-bond donors, and b) the use of these Lewis acids in enantioselective organocatalysis.
Our research is focused on membrane separation processes [10-18] and, as a further challenge, on the separation of single enantiomers from their racemic mixtures.
The synthesis of molecules containing one or more chiral centers is remained active in the field of catalysis for chemists, [2] which are generally extracted from plants or by the separation of racemic mixtures [3].
India, May 8 -- Thermo Fisher Scientific has launched new Maybridge Chiral Resolution Screening and Purification Kits to give organic chemists simple and rapid access to optically pure chiral compounds from their racemic mixtures.
They ensure that students receive sufficient information on such topics as chemical bonding in drug-receptor reactions, isomerism, resolution of racemic mixtures, hydrocarbons, nucleic acids, free radicals and a full consideration of carbohydrates, steroids, and alkaloids.
Chiral columns, which are used with SFC and HPLC, are packed with media that separates enantiomers from racemic mixtures, thus yielding a chirally pure substance.
Used to resolve chiral compounds from racemic mixtures into pure enantiomers, SMB capability is one of the fastest methods to obtain enantiomerically pure drugs, increasingly important as the demand for single-enantiomer drugs continues to grow.
All other currently available albuterol bronchodilators are 50/50 racemic mixtures, containing both R- and S-isomers.
Most endogenous compounds produced in the body are "pure" single isomers, while most synthetic drugs are racemic mixtures.