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

pyrazoline

/pʌɪˈrazəliːn/ /pɪˈrazəliːn/

Chemistry

noun

Each of three heterocyclic compounds having the formula C₃H₆N₂ which are dihydro derivatives of pyrazole; specifically 2-pyrazoline; a substituted derivative of such a compound.

There are three possible isomeric forms of pyrazoline, of which only one (more fully 2-pyrazoline), CH₂CH₂CHNNH, a colourless, basic liquid, has been prepared..

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From pyrazole + -ine, after German Pyrazolin.

单词	pyrazoline
释义	pyrazoline /pʌɪˈrazəliːn/ /pɪˈrazəliːn/ Chemistry noun Each of three heterocyclic compounds having the formula C₃H₆N₂ which are dihydro derivatives of pyrazole; specifically 2-pyrazoline; a substituted derivative of such a compound. There are three possible isomeric forms of pyrazoline, of which only one (more fully 2-pyrazoline), CH₂CH₂CHNNH, a colourless, basic liquid, has been prepared.. Origin Late 19th century; earliest use found in Journal of the Chemical Society. From pyrazole + -ine, after German Pyrazolin.
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