racemic

racemic
Denoting a mixture of optically active compounds that is itself optically inactive, being composed of an equal number of dextro- and levorotatory substances, which are separable. Those compounds internally compensated ( i.e., having an internal plane of symmetry) and therefore not separable into d and l (or + and −) forms, are termed “meso.”

* * *

ra·ce·mic rā-'sē-mik, rə- adj of, relating to, or constituting a compound or mixture that is composed of equal amounts of dextrorotatory and levorotatory forms of the same compound and is optically inactive compare DL-

* * *

ra·ce·mic (ra-seґmik) made up of two enantiomorphic isomers and therefore optically inactive.

Medical dictionary. 2011.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • racemic — RACÉMIC, Ă, racemici, ce, adj., s.n. (Substanţă chimică organică) care este optic inactivă. – Din fr. racémique. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98  racémic adj. m., pl. racémici; f. sg. r …   Dicționar Român

  • racemic — [rāsē′mik] adj. [< RACEME + IC: for sense see RACEMIC ACID] Chem. 1. consisting of an optically inactive, equimolecular mixture of the dextrorotatory and levorotatory forms of certain substances 2. designating or of a compound formed of such a …   English World dictionary

  • Racemic — Ra*ce mic (r[.a]*s[=e] m[i^]k), a. [Cf. F. rac[ e]mique. See {Raceme}.] (Chem.) Pertaining to, or designating, an acid found in many kinds of grapes. It is also obtained from tartaric acid, with which it is isomeric, and from sugar, gum, etc., by …   The Collaborative International Dictionary of English

  • racemic — adjective Etymology: racemic acid, a compound with such a structure obtained from grape juice, ultimately from Latin racemus Date: 1892 of, relating to, or constituting a compound or mixture that is composed of equal amounts of dextrorotatory and …   New Collegiate Dictionary

  • Racemic acid — is an old name for an optically inactive or racemic form of tartaric acid. It is an equal mixture of two mirror image isomers (enantiomers), optically active in opposing directions. Its sodium ammonium salt is unusual among racemic mixtures in… …   Wikipedia

  • racemic acid — n. [< RACEME: orig. found in grapes] a transparent, colorless, crystalline compound occurring in nature with d tartaric acid: it is an optically inactive isomer of tartaric acid …   English World dictionary

  • Racemic mixture — 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… …   Wikipedia

  • racemic compound — racematas statusas T sritis chemija apibrėžtis Optiškai neaktyvus enantiomerų lygių dalių mišinys. atitikmenys: angl. racemate; racemic compound; racemic form; racemic mixture rus. рацемат; рацемическая смесь; рацемическая форма; рацемическое… …   Chemijos terminų aiškinamasis žodynas

  • racemic form — racematas statusas T sritis chemija apibrėžtis Optiškai neaktyvus enantiomerų lygių dalių mišinys. atitikmenys: angl. racemate; racemic compound; racemic form; racemic mixture rus. рацемат; рацемическая смесь; рацемическая форма; рацемическое… …   Chemijos terminų aiškinamasis žodynas

  • racemic mixture — racematas statusas T sritis chemija apibrėžtis Optiškai neaktyvus enantiomerų lygių dalių mišinys. atitikmenys: angl. racemate; racemic compound; racemic form; racemic mixture rus. рацемат; рацемическая смесь; рацемическая форма; рацемическое… …   Chemijos terminų aiškinamasis žodynas

  • racemic acid — vynuogių rūgštis statusas T sritis chemija apibrėžtis Vyno rūgščių racematas. atitikmenys: angl. racemic acid rus. виноградная кислота …   Chemijos terminų aiškinamasis žodynas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”