Mixture of stereoisomers

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As a stereoisomer in which is organic chemistry , a mixture of substances referred to, which is composed of two or more stereoisomers composed. These can be configurational or conformational isomers .

Racemate

Racemic mixtures are a special form of stereoisomeric mixtures in which two mirror-inverted molecules ( enantiomers ) are present in a ratio of 1: 1.

Examples

Isopyrazam

Mixture of stereoisomers of the two syn isomers (top) and two anti isomers (bottom) of isopyrazam

The fungicide isopyrazam developed by Syngenta is available as a mixture of four stereoisomers, consisting of two mirror-image syn and two mirror-image anti isomers. The technical product is largely composed of the syn isomers and contains only a small percentage of the substance's anti isomers.

Decalin

Most of the Decalin merchandise consists of a mixture of trans and cis decalin. This product is used in the manufacture of shoe care products and as a solvent for fats , resins , waxes and varnishes .

  • trans -decalin

  • cis -decalin

See also

Individual evidence

  1. ↑ Entry on isomerism. In: Römpp Online . Georg Thieme Verlag, accessed December 7, 2018.
  2. ↑ IUPAC rule E-4.5 ( PDF )
  3. ↑ Entry on isopyrazam. In: Römpp Online . Georg Thieme Verlag, accessed December 7, 2018.
  4. ↑ Conclusion on the peer review of the pesticide risk assessment of the active substance isopyrazam . In: EFSA Journal . tape 10 , no. 3 , March 1, 2012, p. 2600 , doi : 10.2903 / j.efsa.2012.2600 .
  5. ↑ Entry on Decalin. In: Römpp Online . Georg Thieme Verlag, accessed December 7, 2018.