Pure All-trans Vitamin A Acetate and the Assessment of Vitamin A Potency by Spectrophotometry

Pure All-trans Vitamin A Acetate and the Assessment of Vitamin A Potency by Spectrophotometry

THE international unit of vitamin A activity corresponds with 0.3 µgm. of vitamin A alcohol or 0.345 µgm. of vitamin A acetate 1 . 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 st...

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Veröffentlicht in:Nature (London) 1951-10, Vol.168 (4275), p.598-598
Hauptverfasser: BOLDINGH, J, CAMA, H. R, COLLINS, F. D, MORTON, R. A, GRIDGEMAN, N. T, ISLER, O, KOFLER, M, TAYLOR, R. J, WELLAND, A. S, BRADBURY, T
Format: Artikel
Sprache:eng
Schlagworte:
Humanities and Social Sciences
letter
multidisciplinary
Old Medline
Science
Science (multidisciplinary)
Spectrophotometry
Vitamin A - analysis
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Beschreibung
Zusammenfassung:THE international unit of vitamin A activity corresponds with 0.3 µgm. of vitamin A alcohol or 0.345 µgm. of vitamin A acetate 1 . 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.
ISSN:0028-0836
1476-4687
DOI:10.1038/168598a0