释义 |
bu·tyl \ˈbyüd.əl, -ütəl, -üˌtil\ noun (-s) Etymology: International Scientific Vocabulary but- + -yl : any of four isomeric alkyl radicals C4H9 derived from butane and isobutane: a. : the normal radical CH3CH2CH2CH2− — called also n-butyl b. : the secondary radical CH3CH2CH(CH3)− — called also sec-butyl c. : the tertiary radical (CH3)3C− — called also tert-butyl d. : isobutyl |