Section H: Isotopically Modified Compounds

These Rules are as close as possible to the published version [Pure Appl. Chem., 1979, 51, 353-380. Copyright IUPAC; reproduced with the permission of IUPAC]. It was also published as part of Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, 1979. If you need to cite these rules please quote these references as their source. A PDF of the original printed version is available.

See also Chem. Listy, 1983, 77, 74-94. (in Czech), Kem. Kozl., 1981, 55, 453-473 (in Hungarian) and Nomenklatura związków Organicznych. Część H. Związki o modyfikowanym składzie izotopowym, Wiad. Chem., 33, 698-702, 753-765 (1979) (in Polish)

The provisional version of this document was published in Eur. J. Biochem., 1978, 86, 9-25 and Biochemical Nomenclature and Related Documents, Biochemical Society, 1978, pages 27-43; with the changes in the final version listed in Eur. J. Biochem., 1979, 102, 315-316.

For problems in converting the text into a World Wide Web version see the IUPAC nomenclature home page.

Any comments, corrections or suggestions for a future edition should be e-mailed to g.p.moss@qmul.ac.uk

CONTENTS

• INTRODUCTION

• H-1. SYMBOLS, DEFINITIONS, AND FORMULAE
  • Rule H-1.1. Symbols
    • 1.11 - Nuclide symbols.
    • 1.12 - Atomic symbols.
  • Rule H-1.2. Definitions and formulae of various types of isotopic modification

• H-2. NAMES FOR ISOTOPICALLY MODIFIED COMPOUNDS
  • Rule H-2.1. Isotopically substituted compounds
  • Rule H-2.2. Specifically labeled compounds
  • Rule H-2.3. Selectively labeled compounds
  • Rule H-2.4. Nonselectively labeled compounds
  • Rule H-2.5. Isotopically deficient compounds
  • Rule H-2.6. General and uniform labeling
  • Rule H-2.7. Exceptional changes in the names of some unsymmetrically modified compounds
  • Rule H-2.8. Order of nuclide symbols
  • Rule H-2.9. Stereoisomeric isotopically modified compounds

• H-3. NUMBERING OF ISOTOPICALLY MODIFIED COMPOUNDS
  • Rule H-3.1. Numbering in relation to the unmodified compound
  • Rule H-3.2. Priority between isotopically modified and unmodified atoms or groups

• H-4. LOCANTS FOR NUCLIDES IN ISOTOPICALLY MODIFIED COMPOUNDS
  • Rule H-4.1. Omission or introduction of locants

• References

• APPENDIX Comparative Examples of Formulae and Names for Isotopically Modified Compounds

Return to IUPAC Chemical Nomenclature home page.