примеры использования
Under rigorous conditions benzene will undergo substitution for one of its hydrogen substituents , by a process called electrophilic aromatic substitution.
Other substituents coax beta-peptides into antiparallel hairpin and sheetlike structures.
These compounds differ in the level of oxidation of the flavane nucleus and in the number and position of hydroxyl, methyl, and methoxyl substituents .
the presence of substituent hydrogen atoms
In an interstitial solid solution, substituent atoms or ions are added to void spaces (interstitial sites) between normal atomic sites.
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