Draft edition of IUPAC Blue Book

Oct 30, 2004 by

A draft new edition of Nomenclature of Organic Chemistry by the International Union of Pure and Applied Chemistry (also known as the “Blue Book”) has been issued and comments are requested. The deadline for comment is March 31st 2005.

See the complete post for more details.

As appeared on CHMINF-L:

This new edition, which supersedes both the 1979 Blue Book and the 1993 Guide to IUPAC Nomenclature of Organic Compounds, represents a major new development in IUPAC nomenclature recommendations. Previously IUPAC has provided rules enabling the generation of unambiguous names, by codifying, rationalising and extending existing practice, but in many cases has not expressed a preference between legitimate synonyms (e.g. decahydronaphthalene and bicyclo[4.4.0]decane). However, it has become clear that various communities require a single IUPAC name for a given chemical structure, which can be used for legal and regulatory purposes. Such names are needed in patents, in export-import regulations, and in environmental and health and safety information, etc.

Rather than recommend only a single name for each structure, IUPAC has now developed rules for assigning Preferred IUPAC Names (PINs), while continuing to allow considerable freedom in the use of alternatives according to the diverse needs of the chemical community. This freedom of usage extends, as previously, to a variety of trivial and traditional names; indeed several such names (e.g. acetic acid, benzene and pyridine) are designated as IUPAC-preferred. Thus the present draft should enable users to derive Preferred IUPAC Names if required, while allowing alternatives in a broader context; it will also provide the protocols for developers of naming software to incorporate into their products for PIN generation.

In preparing this new edition, IUPAC has also taken the opportunity to rationalise, clarify and extend nomenclature systems described in previous editions, and has incorporated new nomenclature (e.g. that of phanes and fullerenes) that has appeared in Pure Appl. Chem. since publication of the 1993 Guide.

The IUPAC draft can be downloaded from the following web address:
www.iupac.org/reports/provisional/abstract04/favre_310305.html as a single pdf file (~1300 pages) or as smaller files corresponding to designated sections of the book. In case of difficulty with downloads, paper copies of specified sections may be obtainable from me at the address below. Comments should be addressed to (both) Prof Henri Favre (halfa@contact.net) and Dr Warren Powell(wpowell2@juno.com). Users should bear in mind the provisional nature of this material; it would be unwise to regard PIN specifications in this draft as definitive.

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