英语词汇“suprasterol”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	suprasterol
释义	suprasterol Biochem.\|s(j)uːprəˈstɛrɒl\| [ad. G. suprasterin (A. Windaus et al. 1930, in Ann. d. Chem. CCCCLXXIII. 20): see supra- + -sterol.] Either of two optically active polycyclic isomers (*suprasterol I, suprasterol II) of C₂₈H₄₄O produced by prolonged irradiation of vitamin D. 1931Chem. Abstr. XXV. 301 Ergosterol in EtOH, subjected to the action of Hg light at about 75° for 50 hrs., gives a mixt. of suprasterol I..and II.1943Endeavour Apr. 73/2 Calciferol itself [vitamin D] was also liable to be broken down further to inactive substances—toxisterol and suprasterols I and II.1976H. Campion et al.* in B. E. C. Nordin Calcium, Phosphate & Mineral Metabolism xii. 452 Ergocalciferol itself can, under prolonged irradiation, undergo irreversible photoisomerization to compounds known as suprasterol₂ I.
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