PYRUS AMERICANA

\pˈa͡ɪɹəs ɐmˌɛɹɪkˈɑːnə], \pˈa‍ɪɹəs ɐmˌɛɹɪkˈɑːnə], \p_ˈaɪ_ɹ_ə_s ɐ_m_ˌɛ_ɹ_ɪ_k_ˈɑː_n_ə]\
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1846 - Medical lexicon: a dictionary of medical science
By Robley Dunglison

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Quinones

  • Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.
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