either of two optical isomers differing from each other only in the configuration of the atoms about one asymmetric carbon atom
noun
2.
either of two isomers differentiated by the position of the atoms around a single asymmetric carbon atom
epimer in American English
(ˈepəmər)
noun
Chemistry
either of a pair of isomeric aldose compounds, esp. of certain sugars, that differ from each other in the positions of the H and OH at the second atom from the end of the carbon chain, as d-glucose and d-mannose
Also: epimeride (əˈpɪməˌraid)
Derived forms
epimeric (ˌepəˈmerɪk)
adjective
Word origin
[1910–15; epi- + -mer]This word is first recorded in the period 1910–15. Other words that entered Englishat around the same time include: carbon cycle, coverage, grass roots, payoff, radioepi- is a prefix occurring in loanwords from Greek, where it meant “upon,” “on,” “over,”“near,” “at,” “before,” “after” (epicedium; epidermis; epigene; epitome). On this model, epi- is used in the formation of new compound words (epicardium; epinephrine)
Examples of 'epimer' in a sentence
epimer
The three compounds were stigmasterol, prenylated xanthone isobractatin and its epimer(in a mixture).
Sri Hartati, I Ketut Triyono, Sri Handayani 2014, 'Cytotoxic Isobractatin (Prenylated Xanthone) Epimer Mixture of Garcinia eugenifolia',Indonesian Journal of Chemistryhttps://jurnal.ugm.ac.id/ijc/article/view/21239. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)