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3,3',4,4'-Benzophenonetetracarboxylic dianhydride CAS2421-28-5Monomer for the synthesis of high temperature polymer material monomer.
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N-Chlorosuccinimide CAS128-09-6Used as pharmaceutical intermediates, organic synthetic chlorinating agent, can also be used for the preparation of rubber additives
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2,4-DINITROBENZALDEHYDE CAS528-75-6In organic synthesis, photography, preparation of Schiff base (Schiff's bases).
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3,4-DICHLOROBENZALDEHYDE CAS6287-38-3As organic synthesis intermediates. For the synthesis of drug NITROQUINE etc.