1,700+ technical articles by Aladdin Scientific's scientists on reagent selection, reaction mechanisms, assay design and formulation. New every week.
In the 1970s, researchers isolated the extremely halophilic phototrophic bacterium Ectothiorhodospira halochloris from highly saline and alkaline soda lakes in Egypt. In 1985, Galinski et al. isolated and identified a cyclic amino acid derivative from halophilic bacteria of this genus and named ...
The classical Mitsunobu reaction can activate alcohols under relatively mild conditions and form new C—N, C—O, or C—S bonds through nucleophilic substitution. With suitable chiral secondary alcohols, the reaction is generally accompanied by inversion of configuration. It is therefore ...
Proline and its derivatives are widely found in small-molecule drugs, peptidomimetics, and therapeutic peptides. Recent medicinal chemistry studies have shown that structures such as 4-fluoroproline, 4-(trifluoromethyl)proline, α-substituted proline, and bicyclic proline can alter molecular ...
Cuproptosis is a form of regulated cell death triggered by abnormal intracellular copper accumulation. Its core mechanism is not lipid peroxidation or a Caspase cascade but the binding of copper to lipoylated proteins in the mitochondrial tricarboxylic acid cycle, which induces abnormal protein ...
Piperidine is a common saturated nitrogen-containing heterocycle in drug molecules. It can control the spatial positioning of substituents and can also participate in salt bridges, hydrogen bonding, and solvation through its protonatable nitrogen atom. When piperidine is replaced with another ...
Nitrogen-containing S(VI) functional groups such as sulfoximines and sulfonimidamides have attracted sustained interest in medicinal chemistry and organic synthesis in recent years. Compared with conventional sulfones and sulfonamides, these structures introduce an additional nitrogen ...
In gas–liquid packed columns used in gas chromatography (Gas Chromatography, GC), the solid support is a solid material used to retain and disperse the stationary liquid. After a sample enters the chromatographic column, it repeatedly partitions between the carrier gas and the stationary ...
Activins and inhibins both belong to the TGF-β superfamily and are formed by different combinations of inhibin subunits, but they exert opposing effects on the regulation of pituitary follicle-stimulating hormone (FSH). Activins promote FSH synthesis and secretion, whereas inhibins restrict ...
Aging involves persistent dysregulation of nutrient sensing, energy metabolism, protein homeostasis, and chronic inflammation. IIS, mTOR, AMPK, NF-κB, and Sirtuins are interconnected through nodes including AKT, FOXO, ULK1, and NAD⁺ and jointly regulate cell growth, autophagy, stress ...
