thiol-comb. form

Etymology: < thi- (in thio- comb. form) + -ol suffix.

Chemistry.

A name for the group SH in combination, analogous to hydroxyl, OH. It indicates the presence of an -SH group (or an -SR group, where R is an alkyl radical), as in methyl-thiolcarbamate, H₂N.CO.SCH₃, as distinguished from methyl carbamate, H₂N.CO.OCH₃, and also from methyl-thioncarbamate, H₂N.CS.OCH₃: see thion- comb. form. Also, in those cases in which hydroxy- would mean the presence of an -OH group, thiol- indicates the presence of an -SH group; and where methoxy-, ethoxy-, etc., would indicate CH₃O-, C₂H₅O-, RO- groups, methylthiol-, ethylthiol-, R-thiol-, indicate CH₃S-, C₂H₅S-, RS- groups; thus, the sulphur compound corresponding to sodium ethoxyacetateC₂H₅O.CH₂.CO₂Na is sodium ethylthiolacetateC₂H₅S.CH₂.CO₂Na. Cf. thion- comb. form.

ΚΠ

1899 Jrnl. Chem. Soc. 76 i. 797 The authors adopt the Geneva nomenclature, thion being used to denote compounds containing the group .CS.OR, and thiol those containing the group .CO.SR.

1905 Jrnl. Chem. Soc. 88 i. 626 α-Thiolbutyric acid, SH.CHEt.CO₂H, is an oil boiling at 118–122° under 19 mm. pressure.

This entry has not yet been fully updated (first published 1912; most recently modified version published online June 2020).

单词	thiol-
释义	thiol-comb. form Etymology: < thi- (in thio- comb. form) + -ol suffix. Chemistry. A name for the group SH in combination, analogous to hydroxyl, OH. It indicates the presence of an -SH group (or an -SR group, where R is an alkyl radical), as in methyl-thiolcarbamate, H₂N.CO.SCH₃, as distinguished from methyl carbamate, H₂N.CO.OCH₃, and also from methyl-thioncarbamate, H₂N.CS.OCH₃: see thion- comb. form. Also, in those cases in which hydroxy- would mean the presence of an -OH group, thiol- indicates the presence of an -SH group; and where methoxy-, ethoxy-, etc., would indicate CH₃O-, C₂H₅O-, RO- groups, methylthiol-, ethylthiol-, R-thiol-, indicate CH₃S-, C₂H₅S-, RS- groups; thus, the sulphur compound corresponding to sodium ethoxyacetateC₂H₅O.CH₂.CO₂Na is sodium ethylthiolacetateC₂H₅S.CH₂.CO₂Na. Cf. thion- comb. form. ΚΠ 1899 Jrnl. Chem. Soc. 76 i. 797 The authors adopt the Geneva nomenclature, thion being used to denote compounds containing the group .CS.OR, and thiol those containing the group .CO.SR. 1905 Jrnl. Chem. Soc. 88 i. 626 α-Thiolbutyric acid, SH.CHEt.CO₂H, is an oil boiling at 118–122° under 19 mm. pressure. This entry has not yet been fully updated (first published 1912; most recently modified version published online June 2020). < comb. form1899
随便看	psychoneuroimmunological psychoneuroimmunologies psychoneuroimmunology psychoneurological psychoneurology psychoneuroses psychoneurosis psychoneurotic psychoneurotics psychonic psychonomic psychonomics psychonomy psychonosology psychooptic psychooptical psychoosmic psychopannychian psychopannychism psychopannychist psychopannychistic psychopannychite psychopannychy psychoparesis psychopath