(n.) An acid containing hydrogen; -- sometimes applied to distinguish acids like hydrochloric, hydrofluoric, and the like, which contain no oxygen, from the oxygen acids or oxacids. See Acid.
Example Sentences:
(1) Isonicotinic acid hydracide (INH) increases substantially the chromosomal instability in Fanconi's anemia (FA) cells.
Oxyacid
Definition:
(n.) An acid containing oxygen, as chloric acid or sulphuric acid; -- contrasted with the hydracids, which contain no oxygen, as hydrochloric acid. See Acid, and Hydroxy-.
Example Sentences:
(1) We have determined the effect of pH on the binding affinities of the conjugate bases of four different tetrahedral oxyacids to the sulfate-binding protein.
(2) These studies demonstrate that the sulfate-binding site is stringently designed to bind tightly tetrahedral, fully ionized, oxyacid dianions.
(3) Inorganic cations intensified the process during either the oxyacid cyclization or the antibiotic hydrolysis and liberated the reaction products from the equilibrium mixture.
(4) These compounds are simply substituted phosphorus oxyacids, differing in the number and acidity of titratible protons.
(5) The membrane transport kinetics of the disubstituted phosphorus oxyacid, hypophosphite, were studied in human red cells under equilibrium exchange conditions.
(6) In light of the highly refined 2 A structure of the complex of the sulfate-binding protein with sulfate, and considering the protonation state and net charge of the various oxyacids, we conclude that the pH dependence of chromate binding and the extremely low affinity of phosphate are attributable mainly to a lack of hydrogen bond acceptors in the binding site.
(7) These compounds are simply substituted phosphorus oxyacids, differing in the number and acidity of titratable protons: phosphate (HPO4(2-), pKa 6.8); phosphite (HPO3(2-), pKa 6.4); hypophosphite (H2PO2-); methylphosphonate ((CH3)PO3(2-), pKa 7.4); dimethylphosphinate ((CH3)2PO2-); fluorophosphate [PO3F2-, pKa 4.7); and thiophosphate (HSPO3(2-), pKa 5.5).
(8) 90 per cent ethanol and dry chloroform induced respectively slight and intensive cyclization of linear precursors (oxyacids).
(9) Each compound is a mono- or disubstituted phosphorus oxyacid.