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2. 1-Fluoro-2,4-dinitrobenzene - Wikipedia

   en.wikipedia.org/wiki/1-Fluoro-2,4-dinitrobenzene

   Frederick Sanger. In 1945, Frederick Sanger described its use for determining the N-terminal amino acid in polypeptide chains, in particular insulin. [4] Sanger's initial results suggested that insulin was a smaller molecule than previously estimated (molecular weight 12,000), and that it consisted of four chains (two ending in glycine and two ending in phenylalanine), with the chains cross ...

3. 2,4-DNP - Wikipedia

   en.wikipedia.org/wiki/2,4-DNP

   2,4-Dinitrophenylhydrazine, Brady's reagent, used in organic chemical analysis Topics referred to by the same term This disambiguation page lists articles associated with the same title formed as a letter–number combination.

4. 4,4'-Difluorobenzophenone - Wikipedia

   en.wikipedia.org/wiki/4,4'-Difluorobenzophenone

   4,4’-Difluorobenzophenone is an organic compound with the formula of (FC 6 H 4) 2 CO. This colorless solid is commonly used as a precursor to PEEK, or polyetherether ketone, a so-called high performance polymer. Because PEEK is resistant to attack, it is commonly used in carbon fiber coatings and cable insulation.

5. Halex process - Wikipedia

   en.wikipedia.org/wiki/Halex_process

   1-chloro-2,4-dinitrobenzene → 1-fluoro-2,4-dinitrobenzene 5-chloro-2-nitrobenzotrifluoride → 5-fluoro-2-nitrobenzotrifluoride 1,3-dichloro-4-nitrobenzene → 1,3-difluoro-4-nitrobenzene 2,6-dichlorobenzonitrile → 2,6-difluorobenzonitrile. The nitro groups in the above compounds can be reduced to give the corresponding aniline. For example ...

6. NFPA 704 - Wikipedia

   en.wikipedia.org/wiki/NFPA_704

   NFPA 704 safety squares on containers of ethyl alcohol and acetone. "NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association.

7. 2,4-Di-tert-butylphenol - Wikipedia

   en.wikipedia.org/wiki/2,4-di-tert-butylphenol

   2,4-Di-tert-butylphenol (2,4-DTBP) is a white solid with a phenolic odour. It is primarily used as a raw material for the production of several commercially important antioxidants and phenolic benzotriazole -type UV absorbers .

8. 2,4-Dinitroaniline - Wikipedia

   en.wikipedia.org/wiki/2,4-dinitroaniline

   2,4-Dinitroaniline is a chemical compound with a formula of C 6 H 5 N 3 O 4. ... When in pure form, 2,4-Dinitroaniline has a VoD of 4,800 m/s at 1.61 g/cm 3 molecular ...

9. 2,4-Dinitrochlorobenzene - Wikipedia

   en.wikipedia.org/wiki/2,4-Dinitrochlorobenzene

   2,4-Dinitrochlorobenzene (DNCB) is an organic compound with the chemical formula (O 2 N) 2 C 6 H 3 Cl. It is a yellow solid that is soluble in organic solvents. It is an important intermediate for the industrial production of other compounds. [2] DNCB is produced commercially by the nitration of p-nitrochlorobenzene with a mixture of nitric and ...