157.

Freedman L, Blitz M, Sabine DB, Eigen E (to U.S. Vitamin & Pharmaceutical Corp.). Stable vitamin B12 solutions. U.S. 2,939,821, June 7, 1960. (CA54:20101i) [Vitamin B12 in an aq. soln., alone or in multivitamin compns., is stabilized by an Fe compd. and ethylenediaminetetraacetic acid (EDTA) and its salts. Fe peptonate or NH4 citrate, glycerophosphate, or gluconate are used in amts. sufficient to provide 1.33-50 parts Fe per part vitamin B12. EDTA, usually as the di-Na salt, is added in amts. of 13.3-1000 parts EDTA per part vitamin B12.]

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