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We offer chemical synthesis products that transform simple substances into complex ones through chemical reactions. From stock reagents to specialized catalysts and building blocks, we have the right products to shorten your synthetic routes. Our product range is extensive, including coupling, halogenation, Grignard reagents, oxidation, protection, deprotection, reduction, organoaluminum, and organosilicon reagents.
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Chiral Auxiliaries
Chiral auxiliaries are a novel technique in asymmetric synthesis, consisting of enantiomeric compounds that are temporarily covalently linked to the substrate. During subsequent reactions, these chiral auxiliaries induce the desired chirality or generate an excess of one of the enantiomeric compounds, which are then cleaved and recovered.
We offer market-leading innovative chiral auxiliaries, oxazolidinone derivatives, and thio-based chiral auxiliaries for your various applications.
We offer market-leading innovative chiral auxiliaries, oxazolidinone derivatives, and thio-based chiral auxiliaries for your various applications.

Boronic Acids and Derivatives
Organoborides are organic compounds with boron atoms as their core building blocks, mainly including boric acid (RB(OH)₂), boron esters (such as RBpin, RBcat), and their derivatives. These compounds are formed through B-C bonds or by the combination of boron atoms with organic ligands, and have important applications in drug development (such as the proteasome inhibitor bortezomib) and catalytic materials (such as polynuclear boron Lewis acids).
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Halogenation Reagents
Howei provides halogenating reagents for bromination, chlorination, fluorination, halogenation, and iodination. Halogenation is a chemical unit process that introduces halogen atoms into organic or inorganic compound molecules, and can be divided into fluorination, chlorination, bromination, and iodination. Its reverse process is a dehalogenation reaction, with common types including dehydrohalogenation.
Oxidation Reagents
Redox reactions are among the most common transformation reactions in organic synthesis and are powerful tools for creating new products. Whatever your redox reaction, we have the corresponding oxidizing agents to ensure your work proceeds smoothly.
Reducing Reagents
A reducing agent is a substance that loses electrons in a redox reaction. Generally speaking, a reactant in which the oxidation state of a certain substance increases is a reducing agent. Reducing agents themselves have reducing properties; when oxidized, the product is called an oxidation product. Reduction and oxidation reactions occur simultaneously; that is, while the reducing agent is undergoing a redox reaction with the reduced substance, it is also oxidized itself, becoming an oxidation product.
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