REGARDING

\ɹɪɡˈɑːdɪŋ], \ɹɪɡˈɑːdɪŋ], \ɹ_ɪ_ɡ_ˈɑː_d_ɪ_ŋ]\
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1919 - The Concise Standard Dictionary of the English Language
By James Champlin Fernald

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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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