Standards; Pharmaceutical/API Drug Impurities/Metabolites; Vitamin Derivatives;
应用
Most important of the provitamins A. Widely distributed in the plant and animal kingdom. In plants it occurs almost always together with chlorophyll. Vitamin A precursor. Ultraviolet screen.
参考文献
Karrer, et al.: Helv. Chim. Acta, 12, 1142 (1929), Fischli, M., et al.: Helv. Chim. Acta, 58, 1584 (1975), Desmet, J., et al.: Biochem. Biophys. Acta, 912, 211