Abstract
THE international unit of vitamin A activity corresponds with 0.3 µgm. of vitamin A alcohol or 0.345 µgm. of vitamin A acetate1. The International Standard Preparation is a solution of the all-trans acetate in cottonseed oil, and it serves a dual purpose as a biological and a spectrophotometric standard of reference. The properties of the acetate are therefore important.
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W.H.O. Technical Report Series No. 3, Geneva, 1950.
Gillam, A. E., Biochem. J., 29, 1831 (1935).
Chatain, H., and Debodard, M., C.R. Acad. Sci., Paris, 231, 1120 (1950); 231, 355 (1951).
Cama, H. R., Collins, F. D., and Morton, R. A., Biochem. J., 50, 48 (1951).
U.S. Pharmacopœia xiv, 784 (Mack Publishing Co., Easton, Pa., 1950).
Dalvi, P. D., and Morton, R. A., Biochem. J., 50, 43 (1951).
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BOLDINGH, J., CAMA, H., COLLINS, F. et al. Pure All-trans Vitamin A Acetate and the Assessment of Vitamin A Potency by Spectrophotometry. Nature 168, 598 (1951). https://doi.org/10.1038/168598a0
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DOI: https://doi.org/10.1038/168598a0
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