When the compound is exposed to HCl, the NaNO2 is converted to HNO2 via the following reaction: Even more so, the strong acidity of the HCl reduces HNO2 to its electrophile form known as NO+ (nitrosonium), which serves as the building block of the diazonium salt. When the nit...
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Methods for the coupling of two alkyl centers are still relatively uncommon in the field of cross-electrophile coupling54. Our specific aim was to synthesize functionalized alkanes with a deuterium label located internally by utilizing alkyl bromides and d2-alkyl TT salts (Fig.5a. For the optimiz...
38the S1 subunit protein (14-685 aa) of SARS-CoV-2, and inactivated enterovirus type 71 (EV71) (Fig.3d). Bacterial capsular polysaccharides (CPs) are generally believed to be T cell-independent type 2 (TI-2) antigens that mainly activate B cells, resulting in the production of IgM due...
Lewis acids generally have an incomplete octet (e.g. BF 3 ). Transition metal ions are generally Lewis acids. Lewis acids must have a vacant orbital (into which the electron pairs can be donated). Compounds with -bonds can act as Lewis acids: H 2 O(l) + CO 2 (g) H 2...
The compounds used in the present study had the ferrous form of iron. The solubility of ferrous sulfate is higher than the other three iron salts. Tooth discoloration by iron was significantly greater in ferrous sulfate group in this study. Thus, it may be concluded that the lower the ...
However, the solubility calculations presented in Figure 2, clearly show that monohydrocalcite can form only if matrix pH is greater than 7.8 (for [Ca2+] = 5 µM) or even 8.6 (for [Ca2+] = 0.17 µM). In lower pH, neither monohydrocalcite, nor any other calcium carbonate will ...
respectively. Doses of 1–4% induced phytotoxicity in the form of a discolored ring surrounding the wound on the epidermis of the fruit; this phytotoxicity enlarged as the concentration of SMB increased. The phytotoxic features were similar on apples and oranges. The methodological procedure made ...
Versions Notes Abstract A set of commonly used food additives was evaluated for their antifungal activity against the brown rot disease of fruits caused by the fungal pathogen Monilinia fructigena, which is one of the most economically important agents, causing important damage to pome fruits, such...
Versions Notes Abstract The paucity of multi-component compounds containing the non-steroidal anti-inflammatory drug (NSAID) S-(+)-ibuprofen (S-IBU) in combination with other drugs prompted the present study, which describes 1:1 salts of this active pharmaceutical ingredient (API) with the two ...