MATHEWS and WALKER [1909] and, in greater detail, Dixon and Tunnicliffe [1923] have demonstrated the great significance of the hydrogen ion activity in relation to the rates of oxidation and of autoxidation of a number of thioacids. To assist the analysis of these results and of certain observations of our own it became desirable to know the dissociation constants of cysteine, thioglycollic aci...

The kinetic study of the condensation reaction between phloroglucinol and acetone was investigated at 30, 35, 40 and 45±0.05 °C in 100% methanol. The hydrochloric acid concentrations used were 0.0261, 0.0364, 0.0577 and 0.0728 M. The reaction was investigated with and without a promoter, thioglycollic acid (TGA), and taking into account the functionality (h<e...

Sodium 1-[4-amino-5-mercapto-4H-(1,2,4)triazol-3-yl]heptadecane-1-sulfonate 2 has been used as a new precursor to synthesize some important biologically active heterocycles. Reaction of 2 with carbon disulphide in pyridine and acid chlorides yields the 1,2,4-triazole derivatives 3, 4a and 4b. Condensation of 2 with appropriate aldehydes gives 5a-c which have been cyclized by treating with thiog...

1. Some 16 amino acids (not containing SH or S-S groups) did not affect the reactivation of yeast invertase inactivated by acid. 2. Cysteine, reduced glutathione, homocysteine, thiophenol, and thioglycollic acid accelerated the reactivation of yeast invertase. 3. Cystine, oxidized glutathione, and homocystine inhibited the reactivation of yeast invertase. 4. The compounds mentioned in 2 and 3 d...

the kinetic study of the condensation reaction between phloroglucinol and acetone was investigated at 30, 35, 40 and 45±0.05 °c in 100% methanol. the hydrochloric acid concentrations used were 0.0261, 0.0364, 0.0577 and 0.0728 m. the reaction was investigated with and without a promoter, thioglycollic acid (tga), and taking into account the functionality (h) of phloroglucionol. the reaction was...

in the present work, bi2s3 nanostructures have been synthesized with the aid of thioglycollic acid (tga) a solvent, capping agent, and sulfide source in the presence of ultrasonic method. the as-synthesized products were characterized by x-ray diffraction (xrd), energy dispersive x-ray spectroscopy (eds), scanning electron microscope (sem), and photoluminescence (pl) spectroscopy. the band gap ...