请输入您要查询的英文单词:

 

单词 pteridine
释义 pteridine Chem.|ˈtɛrɪdiːn|
Also -in.
[ad. G. pteridin (C. Schöpf et al. 1941, in Ann. d. Chem. DXLVIII. 83): see pterin and -idine.]
A synthetic yellow crystalline solid, C6H4N4, which has a bicyclic structure formed from fused pyrazine and pyrimidine rings; any derivative of this, many examples of which occur naturally, esp. as insect pigments and vitamins of the B group.
1943Brit. Chem. & Physiol. Abstr. A. ii. 281 The structure of leucopterin..as 2-imino-6:8:9-trihydroxy⁓pteridine is confirmed. This and similar CO compounds are named as (enolic) OH-derivatives of pteridine.1948Nature 2 Oct. 524/2 Reaction of the diaminopyrimidine in aqueous solution with glyoxal bisulphite gives pteridine which crystallizes from alcohol in pale yellow plates, m.p. 140°.1951Jrnl. Chem. Soc. 474 All natural pteridines have at least one amino- and one hydroxy-substituent.1962[see drosophila].1968L. A. Paquette Princ. Mod. Heterocyclic Chem. xi. 384 Another vitamin of the B group, B2 or riboflavin.., also contains the basic pteridine ring system.
随便看

 

英语词典包含277258条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/22 13:59:10