noun. Either of a pair of crystals, molecules, or compounds that are mirror images of each other but are not identical, and that rotate the plane of polarized light equally, but in opposite directions.

noun. either of a pair of optical isomers of a chemical substance whose molecules are mirror images of each other, i. e., are related to each other as a right-handed to a left-handed glove; -- meaningful only for structures which have internal asymmetry.

noun. One of a pair of stereoisomers that is the mirror image of the other, but may not be superimposed on this other stereoisomer. Almost always, a pair of enantiomers contain at least one chiral center, and a sample of either enantiomer will be optically active.

noun. either one of a pair of compounds (crystals or molecules) that are mirror images on each other but are not identical

"When switching dosage forms, if the prescriber does not obtain the desired therapeutic endpoint in spite of education about the extensive differences in inhalers, there are alternatives - use of a spacer, increased dose causing more side effects or switching to Xopenex, the R- enantiomer which is the active portion of the racemic albuterol."

D-  L-  dextro-  diastereoisomer  levo-  

enantiomeric  

chemical compound  compound  

__________________________________________  alkene  desalt  eason  emember  

enantiomorph  optical isomer