Recalcitrance of atrazine at low levels to aerobic and hydrogenotrophic micro-organisms

Summary Experiments with flow-through and batch reactor systems, incubated either under air or under hydrogen, confirm literature data that atrazine present at low concentrations in water is very recalcitrant to microbial metabolism. Only a temporary adsorption could be observed. Dimethylamine and cyanuric acid, added at trace levels, failed to induce breakdown of atrazine.     

Solid-phase synthesis of peptidosulfonamide containing peptides derived from Leu-enkephalin

Using Boc or Fmoc-protected β-substituted aminoethanesulfonyl chlorides (2-substituted taurylchlorides) the solid-phase synthesis of dipeptidosulfonamides as well as peptidosulfonamide containing peptides derived from Leu-enkephalin is described. The binding activity of the peptidosulfonamide YGGFL derivatives is reported.