Addition of Vowels On relatively rare occasions, vowels are inserted between consonants for euphony:
e.g., 2-Naphthalenesulfonodiimidic acid (cf. Rule C-642.2)
Ethyl ethanesulfonohydroximate (cf. Rule C-642.1).
See Recommendations'93 R-0.1.7
This HTML reproduction of Sections A, B and C of IUPAC "Blue Book" is as close as possible to the
published version [see Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, Oxford, 1979.
Copyright 1979 IUPAC.] If you need to cite these rules please quote this reference as their source.
Published with permission of the IUPAC by Advanced Chemistry Development, Inc., www.acdlabs.com, +1(416)368-3435 tel, +1(416)368-5596 fax. For comments or suggestions please contact firstname.lastname@example.org