Is ( R )-sodium lactate dextrorotatory or levorotatory?
February 20th, 2023
Sodium ##(R)##-lactate is dextrorotatory.
Sodium ##(S)##-2-hydroxypropanoate (or sodium L-lactate) is produced from pyruvate by the enzyme lactate dehydrogenase.
The commercially available product is 98 % pure and has ##α_”D”^20 = -12^°##.
So the enantiomeric salt sodium ##(R)##-lactate would have ##α_”D”^20 = +12^°##.
Sodium ##(R)##-lactate is dextrorotatory.
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