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    Heterocyclic Compound

    4-Dimethylaminopyridine

    (1122-58-3)
    1. A highly efficient catalyst for acylation reactions.
    2. 4-Dimethylaminopyridine is a versatile hypernucleophilic acylation catalyst, it is used to improve the yield, reduce the reaction time, improving relaxation process conditions. Widely used in perfumes, dyes, pigments, pesticides, pharmaceuticals and polymer compounds and other fields. Also used as a catalyst for the synthesis of polyurethane, a curing agent and a blowing catalyst.
    3. DMAP is a useful highly basic nucleophilic catalyst for a variety of reactions such as esterifications with anhydrides, the Baylis-Hillman reaction, hydrosilylations, tritylation, the Steglich rearrangement.
    4. A highly fluorescent adenosine analogue, which in a dimethoxytrityl, phosphoramidite protected form, can be site-specifically inserted into oligonucleotides through a 3?5?phosphodiester linkage using an automated DNA synthesizer

    2-Chloropyridine

    (109-09-1)
    2-Chloropyridine (2-CPY) has been identified as a trace organic chemical in process streams, wastewater and even drinking water.Furthermore, it appears to be formed as a secondary pollutant during the decomposition of specific insecticides.

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    2-Bromopyridine

    (109-04-6)
    2-Bromopyridine is a 2-halogenated pyridine used in the preparation of a variety of biologically active compounds such as antimalarial agents and beta-adrenoceptor agonist.

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    Heterocyclic compounds are organic compounds that contain a heterocyclic structure in the molecule and are the largest number of organic compounds. In addition to carbon atoms, the atoms constituting the ring also contain at least one heteroatom. The most common heteroatoms are nitrogen atoms, sulfur atoms, and oxygen atoms. This organic compound can be divided into two categories: aliphatic heterocycles and aromatic heterocycles. Heterocyclic compounds are ubiquitous in the structure of drug molecules.
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