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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. IPA - Wikipedia

    en.wikipedia.org/wiki/IPA

    IPA commonly refers to: International Phonetic Alphabet, a system of phonetic notation International Phonetic Association, behind the alphabet;

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