Racemic Calcium Pantothenate
-Alanine, N-(2,4-dihydroxy-3,3-dimethyl-1-oxobutyl)-, calcium salt (2:1), (±)-.
Calcium dl-pantothenate (1:2) [6381-63-1].
» Racemic Calcium Pantothenate is a mixture of the calcium salts of the dextrorotatory and levorotatory isomers of pantothenic acid. It contains not less than 5.7 percent and not more than 6.0 percent of nitrogen (N), and not less than 8.2 percent and not more than 8.6 percent of calcium (Ca), both calculated on the dried basis.
noteThe physiological activity of Racemic Calcium Pantothenate is approximately one-half that of Calcium Pantothenate.
Packaging and storage Preserve in tight containers.
Labeling Label preparations containing it in terms of the equivalent amount of dextrorotatory calcium pantothenate.
Specific rotation 781S: between 0.05 and +0.05.
Test solution: 50 mg per mL, in water.
Alkalinity Dissolve 1.0 g in 15 mL of carbon dioxide-free water in a small flask. As soon as solution is complete, add 1.6 mL of 0.10 N hydrochloric acid, then add 0.05 mL of phenolphthalein TS, and mix: no pink color is produced within 5 seconds.
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USP32NF27 Page 1769
Chromatographic columns text is not derived from, and not part of, USP 32 or NF 27.