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racemic mixture

A mixture containing equal amounts of two enantiomers of a chiral molecule, resulting in a compound that is optically inactive.
Noun
pl: racemic mixtures

This term is a technical specification used primarily in stereochemistry to describe a specific state of optical inactivity. It refers to a 1:1 ratio of mirror-image molecules, which cancels out the ability of the substance to rotate plane-polarized light.

In a laboratory or pharmaceutical context, the term is often used when discussing the purity of a drug. Because different enantiomers can have vastly different biological effects, chemists often seek to resolve a racemic mixture into its pure components to ensure safety and efficacy.

Meanings

Noun

A mixture containing equal amounts of two enantiomers of a chiral molecule, resulting in a compound that is optically inactive.

The chemist synthesized a racemic mixture of the drug, which was then separated into its individual enantiomers.

Examples

The synthesis resulted in a racemic mixture of the target compound.

none

The synthesis resulted in a racemic mixture of the target compound.

Is this sample a pure enantiomer or a racemic mixture?

School Life

Is this sample a pure enantiomer or a racemic mixture?

A racemic mixture shows no optical activity because the rotations cancel each other out.

School Life

A racemic mixture shows no optical activity because the rotations cancel each other out.

I wonder if we can resolve this racemic mixture using a chiral column.

none

I wonder if we can resolve this racemic mixture using a chiral column.

Many older drugs were marketed as a racemic mixture despite only one isomer being active.

Health

Many older drugs were marketed as a racemic mixture despite only one isomer being active.

We need to separate the racemic mixture to test the toxicity of each enantiomer.

Health

We need to separate the racemic mixture to test the toxicity of each enantiomer.

The reaction produced a racemic mixture since there was no chiral catalyst present.

School Life

The reaction produced a racemic mixture since there was no chiral catalyst present.

Check the polarimeter to see if you have a racemic mixture.

School Life

Check the polarimeter to see if you have a racemic mixture.

The chemist noted that the product was a racemic mixture upon initial analysis.

none

The chemist noted that the product was a racemic mixture upon initial analysis.

Related Words

racematechiralityenantiomerisomerstereoisomeroptical activitypolarimeterchiral centerasymmetrylevorotatorydextrorotatoryracemizationresolutionstereochemistrymoleculeatomcarbonbondconfigurationmirror imageplanesymmetryoptical rotationdiastereomermeso compoundepimeranomercatalystenzymeproteinamino acidsugarglucosefructoselactatepharmacologydrugefficacytoxicityside effectbioavailabilityreceptorbindingaffinitychiral auxiliaryasymmetric synthesisresolveseparatefractionationcrystallizationchromatographypolarimetrychemistryorganic chemistrybiochemistrystereocenterprochiralachiralhandednessenantiomeric excessequilibriumthermodynamicsentropyenergy barriertransition stateactivation energy
Última actualización: May 2026Reportar un error