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

单词

phthiocol

释义

phthiocol Biochem.|ˈfθaɪəkɒl|
[f. phthisis + -o + -col (perh. f. alcohol).]
A yellow crystalline pigment, 3-hydroxy-2-methyl-1,4-naphthoquinone, C₁₁H₈O₃, originally isolated from tubercle bacilli, which has the action of vitamin K.
1933Anderson & Newman in Jrnl. Biol. Chem. CIII. 197 In order to indicate its origin, we propose to designate the pigment by the name phthiocol.1954H. J. Almquist in Sebrell & Harris Vitamins II. ix. 393 Synthetic phthiocol tested with vitamin K-deficient chicks was found to be distinctly active in restoring normal blood-clotting time and thus became the first completely identified form of vitamin K.1960A. E. Bender Dict. Nutrition 133/2 Natural vitamin K chemically is a phylloquinone... The synthetic materials, menadione..and phthiocol (2-methyl-3-hydroxy-1:4-naphthoquinone), are more active than the naturally occurring vitamins.1964Asselineau & Lederer in V. C. Barry Chemotherapy of Tuberculosis i. 21 Phthiocol..isolated..after saponification of mycobacterial fat, is an artefact, produced from a vitamin K-like polyisoprenoid naphthoquinone.

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