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For English pronouns formed with the suffix -one, see Indefinite pronoun.

The suffix -one is used in organic chemistry to form names of organic compounds containing the -C(=O)- group: see ketone.[1] Sometimes a number between hyphens is inserted before it to state which atom the =O atom is attached to. This suffix was extracted from the word acetone. The final "-e" disappears if it is followed by another suffix that starts with a vowel.


  1. ^ International Union of Pure and Applied Chemistry, Commission on Nomenclature of Organic Chemistry (1993). Panico R, Powell WH, Richer JC, ed. A guide to IUPAC nomenclature of organic compounds: recommendations 1993. Oxford: Blackwell Scientific Publications. ISBN 0-632-03702-4.