https://www.selleckchem.com/products/l-alpha-phosphatidylcholine.html Degradation was present over the whole concentration range and increased with higher concentrations until a concentration of 35.1 mg/L. Both models showed accurate prediction of meropenem degradation. In conclusion, this study provides detailed insights into the concentration-dependent degradation of meropenem in human plasma stored at -20 °C over 1 year. Meropenem in human plasma is shown to be stable at least up to approximately 80 days when stored at -20 °C. The polynomial model allows calculating original meropenem concentrations in samples stored for a known period of time at -20 °C.Based on solvothermal synthesis, self-assembly of the heptadentate 2,6-diacetylpyridine bis(nicotinoylhydrazone) Schiff base ligand (H2L) and Zn(II) and/or Cd(II) salts has led to the formation of three homometallic [CdL]n (1), [CdL]∙0.5dmf∙H2On (2) and [ZnL]∙0.5dmf∙1.5H2On (3), as well as two heterometallic [Zn0.75Cd1.25L2]∙dmf∙0.5H2On (4) and [MnZnL2]∙dmf∙3H2On coordination polymers. Compound 1 represents a 1D chain, whereas 2-5 are isostructural and isomorphous two-dimensional structures. The entire series was characterized by IR spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction and emission measurements. 2D coordination polymers accommodate water and dmf molecules in their cage-shaped interlayer spaces, which are released when the samples are heated. Thus, three solvated crystals were degassed at two temperatures and their photoluminescent and adsorption-desorption properties were recorded in order to validate this assumption. Solvent-free samples reveal an increase in volume pore, adsorption specific surface area and photoluminescence with regard to synthesized crystals.New strategies providing protection against tuberculosis (TB) are still pending. The airborne nature of Mycobacterium tuberculosis (M.tb) infection assumes that the mucosal delivery of the TB vaccine could be a more pr