perature for 6hr. Then the mixture was neutralized with AcOH and 3.2g. of colorless crystals were obtained. Recrytstallization from EtOH gave (XV), m.p. 129•‹; •kƒ¿•l20D+16.8 (c=1.0, CHCl3). (XV) gave color reaction with sodium nitroferricyanide and was not hygroscopic. Anal. Calcd. for C16H20O5S: C, 59.25; H, 6.22; S, 9.87. Found: C, 59.04; H, 6.39; S, 9.90. 6-Deoxy-6-mercapto-6-S-methyl-1, 2-...

Subnanometer-sized copper nanoclusters were prepared by a one-pot procedure based on wet chemical reduction. The structural characteristics of the 2-mercapto-5-n-propylpyrimidine-protected nanoclusters, Cu(n) (n ≤ 8), were determined by mass spectrometry. The Cu nanoclusters displayed apparent luminescence, with dual emissions at 425 and 593 nm, with quantum yields of 3.5 and 0.9%, respectively...

a new series of n-(5-mercapto-1,3,4-thiadiazol-2-yl)-2-phenylacetamide derivatives (3a-3j) were synthesized via an amidation reaction using edc and hobt in acetonitrile solvent at room temperature condition. chemical structures were characterized by 1h nmr, ir and ms spectroscopic methods and related melting points were also determined. the anticancer activity was evaluated using mtt procedure ...

A semiconducting water-soluble core-shell quantum dots (QDs) system capped with thiolated ligand was used in this study for the sensitive detection of glucose in aqueous samples. The QDs selected are of CdSe-coated ZnS and were prepared in house based on a hot injection technique. The formation of ZnS shell at the outer surface of CdSe core was made via a specific process namely, SILAR (success...

The heterogeneous ozonation of suspended malathion and chlorpyrifos particles are studied in real-time with a vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer (VUV-ATOFMS). The pesticide particles with the diameter of hundreds of nanometers are generated by the homogeneous nucleation method using azelaic acid as nucleus. The reactions are carried out in an aerosol rea...

2-mercapto-1(beta-4-pyridethyl)benzimidazole (MPB) inhibited the development of antiviral activity induced by interferon in chick cells. The MPB effect was reversed by washing the cells. The action of MPB was on a step immediately following interferon binding but before the cellular RNA and protein synthesis that appear to be required for interferon action. The step blocked by MPB possibly invo...