Preferred Label : diastereoisomer excess;
Detailed label : diastereoisomer (diastereoisomeric) excess;
IUPAC definition : This is defined by analogy with enantiomer excess, as D1 - D2 [and the percent diastereoisomer
excess as 100(D1- D2)], where the mole fractions of two diastereoisomers in a mixture
or the fractional yields of two diastereoisomers formed in a reaction are D1 and D2
(D1 D2 1). The term is not applicable if more than two diastereoisomers are present.
Frequently this term is abbreviated to d.e.;
Origin ID : D01675;
See also
This is defined by analogy with enantiomer excess, as D1 - D2 [and the percent diastereoisomer
excess as 100(D1- D2)], where the mole fractions of two diastereoisomers in a mixture
or the fractional yields of two diastereoisomers formed in a reaction are D1 and D2
(D1 D2 1). The term is not applicable if more than two diastereoisomers are present.
Frequently this term is abbreviated to d.e.
