| 释义 |
substituent Chem.|səbˈstɪtjuːənt|
[ad. L. substituens, -entem, pr. pple. of substituĕre to substitute.]
An atom or group of atoms taking the place of another atom or group in a compound.
1895–6Proc. Chem. Soc. 51 The influence of ortho-substituents in preventing alkylation of the carboxyl group. 1905Brit. Med. Jrnl. 27 May 1144 A substance having the structure of cinnamic acid, with a hydroxyl (OH) substituent. |