Editing Epimer (section)

{{Short description|One of a pair of diastereomers}}
In [[stereochemistry]], an '''epimer''' is one of a pair of [[diastereomer]]s.<ref name="Clayden">{{ cite book | last1 = Clayden | first1 = Jonathan | author-link1 = Jonathan Clayden | last2 = Greeves | first2 = Nick | last3 = Warren | first3 = Stuart | author-link3 = Stuart Warren | title = Organic Chemistry | edition = 2nd | publisher = Oxford University Press | date = 2012 | page =1112}}</ref> The two epimers have opposite [[absolute configuration|configuration]] at only one [[stereogenic center]] out of at least two.<ref>{{GoldBookRef|title=Epimers|file=E02167}}</ref> All other stereogenic centers in the molecules are the same in each. '''Epimerization''' is the interconversion of one epimer to the other epimer.

[[Doxorubicin]] and [[epirubicin]] are two epimers that are used as drugs. 
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