substituent


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substituent

[səb′stich·ə·wənt]
(organic chemistry)
An atom or functional group substituted for another in a chemical structure.
References in periodicals archive ?
D research scholar performed the optimization of salbutamol as a substituent of isoproterenol to standardize an experimental animal model to induce MI.
Specifically, indoles possessing a variety of electronically different substituents, including halogen, alkyl, alkoxy, cyano and methoxy carbonyl groups at different positions on the bezene ring undergo reaction to produce the corre-sponding substituted tertiary alcohol in good to ex-cellent yields (Table 2, compounds 4, 5, 7-12, 14, 16-21).
Applications of viologens [1] cannot be limited to its short alkyl group substituents.
Considering the positive intrinsic birefringence of PTFEMA, we estimated that the contribution of the ester substituent, C-C[F.
Separation factors ([alpha]) for the HPLC enantioseparation of racemates 1-5 using cellulose trisphenylcarbamate (CTPC) derivatives having a substituent at 4-position as CSPs (a)) 4-Substituents Racemates (b) [CH.
This value is low enough to suggest that, when R = methyl, the substituent and the pyrogallol ring can freely rotate around that bond and readily reorient from their initial positions with respect to the bond as the compound is assembled.
biosimilars are also known as follow-on-proteins and have been approved under section 501(b), whereas in Canada, biosimilars are called Substituent Entry Biologics (SEB).
Topics covered include ring synthesis, substituent installation and modification, reduction to partially hydrogenated pyridines, piperidines, and quinolines, alkaloid synthesis, fluorination, and the use of pyridines as reagents.
These bond angles yield large amounts of free volume, leaving space for design or, more specifically, for managing the amount and type of substituent group and filler that go into a silicone system.
Les dispositions de l'article 39 de la loi de finances complementaire pour 2009 substituent l'extrait de role apure par l'attestation de situation fiscale.
They differ in the orientation of their fluorine substituent at C3 and whether they contain an amine or a guanidine functional group at C4.
82 while literature reported values for the compounds with a methyl or decyl substituent at the meso position are 0.