A diastereoisomer that has the opposite configuration at only one of two or more tetrahedral 'stereogenic' centres present in the respective molecular entity. IUPAC STEREOCHEMICAL GLOSSARY (1993).
Found op http://www.chem.qmul.ac.uk/iupac/gtpoc/E.html
One of two steroisomers with more than one chiral center that differ in stereochemical configuration at only one.
Found op http://www.chemicalglossary.net/definition/653-Epimer
Diastereomeric monosaccharides that have opposite configurations of a hydroxyl group at only one position, eg. D-glucose and D-mannose.
Found op http://www.encyclo.co.uk/visitor-contributions.php
<biochemistry> Diastereomeric monosaccharides that have opposite configurations of a hydroxyl group at only one position, for example D glucose and D mannose. ... (18 Nov 1997) ...
Found op http://www.mondofacto.com/facts/dictionary?epimer
(ep´ĭ-mәr) one of two or more optical isomers that differ only in the configuration around one asymmetric carbon atom. adj., epimer´ic., adj.
Found op http://www.encyclo.co.uk/local/21001
In chemistry, epimers are diastereomers that differ in configuration of only one stereogenic center. Diastereomers are a class of stereoisomers that are non-superposable, non-mirror images of one another. In chemical nomenclature, one of the epimeric pairs is given the prefix epi- for example in qu...
Found op http://en.wikipedia.org/wiki/Epimer
Type: Term Pronunciation: ep′i-mĕr Definitions: 1. One of two molecules (having more than one chiral center) differing only in the spatial arrangement about a single chiral atom, α-d-glucose and α-d-galactose (with respect to carbon-4).
Found op http://www.medilexicon.com/medicaldictionary.php?t=29842
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