1,700+ technical articles by Aladdin Scientific's scientists on reagent selection, reaction mechanisms, assay design and formulation. New every week.
After neutral wall putty is troweled onto a wall, yellowish-brown, reddish-brown, or dark-brown spots may appear on the surface. These spots are often directly judged as “rusting of the putty powder.” This judgment is not accurate. Putty itself is not a metallic material and does not corrode ...
This article focuses on the ChemRxiv preprint “α-Fluoroamines: Myth or Reality?” by Vadym Levterov, Oleh Shablykin, Oleksandr Stashkevych, Pavel K. Mykhailiuk, and co-workers. The work reports the synthesis and derivatization of a class of stable bridgehead α-fluoroamines. The central ...
Triazole intermediates are a class of synthetic building blocks that either contain a triazole structure or can be used to construct a triazole structure. Their value in synthetic routes is mainly reflected in three aspects: introducing a triazole core, linking different molecular fragments, and ...
In peptide synthesis, impurities do not always originate from “incomplete coupling” or “incomplete deprotection.” Many quality issues arise because certain functional groups enter undesired reaction pathways under specific conditions. Carboxyl and hydroxyl groups are two typical ...
In the literature, reagent catalogs, and experimental protocols, many compounds are classified as “pyrazine-based compounds”: 2-methylpyrazine is commonly seen in flavor analysis; 2-chloropyrazine is often used for further derivatization; pyrazine-2-carboxylic acid can be used for polarity ...
In wall putty, mortar, slurry-applied roughening coats, construction adhesives, and coating systems, polyvinyl alcohol is a commonly used water-soluble polymer material. When selecting polyvinyl alcohol, many users encounter a practical question: if they are all polyvinyl alcohol, why does 1788 ...
Triazole compounds are widely encountered in research fields such as pharmaceuticals, agrochemicals, click chemistry, corrosion protection, proton-conducting materials, coordination materials, and energetic materials. At first glance, these applications appear to differ substantially from one ...
Surfactants are a class of molecules with an amphiphilic structure. They are typically composed of two parts: one end is a hydrophilic head group, which tends to interact with water; the other end is a hydrophobic chain segment, which tends to interact with oils, air, or nonpolar substances.
Wall putty is a thin-layer leveling material. Although its application thickness is limited, it must simultaneously meet multiple requirements, such as smooth troweling, crack resistance, resistance to powdering, stable adhesion, and easy sanding. After application, the water in the putty is ...