l- - definition of l- in the Medical dictionary - by the Free Online Medical Dictionary, Thesaurus and Encyclopedia.

l- chemical prefix specifiying the relative configuration of an enantiomer, indicating a carbohydrate with the same configuration around a specific carbon atom as l-glyceraldehyde or an amino acid having the same configuration as l-serine. Opposed to d-.

l- /l- / levo- (left, counterclockwise, levorotatory). Opposed to d-.

L-

pref.

Relating to the configuration of l-glyceraldehyde, a compound chosen as the basis for stereochemical nomenclature because it is the simplest carbohydrate that can form optical isomers: l-lactic acid.

pref. l-

To the left; levo: l-lactic acid.

abbreviation for levo- (left or counterclockwise); a chemical prefix indicating an enantiomer that rotates the plane of polarization of a beam of light in the counterclockwise direction, the other enantiomer being specified as d-. For further explanation, see d-.

a chemical prefix that specifies the relative chemical configuration of an enantiomer, carbohydrates corresponding to l-glyceraldehyde and amino acids corresponding to l-serine; see d- for further explanation.

L-

chemical prefix (written as small capital) that specifies that the substance corresponds in chemical configuration to the standard substance l-glyceraldehyde. Carbohydrates are named by this method to distinguish them by their chemical composition. The opposite prefix is d-.

chemical abbreviation, levo- (i.e. left or counterclockwise).

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