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  1. nih.gov
    https://pubchem.ncbi.nlm.nih.gov/compound/2-Heptanone_-5-ethyl

    2-Heptanone, 5-ethyl- | C9H18O | CID 3084772 - PubChem

  2. nist.gov
    https://wtt-pro.nist.gov/wtt-pro/index.html?cmp=5-ethyl-2-heptanone

    5-ethyl-2-heptanone -- Critically Evaluated Thermophysical

  3. libretexts.org
    https://chem.libretexts.org/Bookshelves/Introductory_Chemistry...

    14.9: Aldehydes and Ketones- Structure and Names

  4. libretexts.org
    https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic...

    6.7: ¹H NMR Spectra and Interpretation (Part II)

  5. libretexts.org
    https://chem.libretexts.org/Courses/Brevard_College/CHE_202...

    1.2: Aldehydes and Ketones- Structure and Names

  6. chemspider.com
    https://www.chemspider.com/Chemical-Structure.2341786.html

    5-Ethylheptan-2-one | C9H18O - ChemSpider

  7. chembk.com
    https://www.chembk.com/cn/chem/40238-93-5

    40238-93-5_化工百科 - ChemBK

  8. nih.gov
    https://pubchem.ncbi.nlm.nih.gov/compound/2-heptanone

    2-Heptanone | C7H14O | CID 8051 - PubChem

  9. nist.gov
    https://webbook.nist.gov/cgi/cbook.cgi?ID=541-85-5

    3-Heptanone, 5-methyl- - NIST Chemistry WebBook

  10. nih.gov
    https://pubchem.ncbi.nlm.nih.gov/compound/5-methyl-2-heptanone

    5-Methyl-2-heptanone | C8H16O | CID 28965 - PubChem