Nomenclature and Indexing

Eor the many details of constmcting or interpreting stmctures and systematic names, the Hterature on nomenclature and indexing (6) can be consulted. Systematic nomenclature is illustrated by the Chemicaly hstracts name of the sodium iron(III) EHPG chelate sodium [[N,N -l,2-ethanediylbis[2-(2-hydroxyphenyl)glyciQatol]](4-)-N,N, 0,0, 0, 0 ]ferrate(l-) [16455-61-1], The ferrate anion (12) [20250-28-6] and the potassium salt [22569-56-8] are also Hsted ia Chemical Abstracts (7). 

The editor-in-chief takes pleasure in thanking his colleagues on the Editorial and Advisory Boards for their help in preparing this volume. Miss Janet D. Scott has been particularly helpful, as she has handled all the problems of nomenclature and indexing. The editor wishes also to thank Mrs. John Maisch for her help in preparing the manuscript, and Daryle H. Busch, without whose excellent help this project could not have been completed for many months. 

An attempt has been made by the ACS Council to remedy this situation by requiring that authors of papers published in ACS journals as far as practical use the nomenclature found in CA subject indexes. This is where nomenclature and indexing should have a common meeting place. 

CONSULTANT ON NOMENCLATURE AND INDEXING JANET D. SCOTT The Interscience Encyclopedia, Inc., Brooklyn... 

Since the publication of Volume I, Dr. W. C. Schumb has been added to the Board of Editors and Miss Janet D. Scott has consented to serve as consultant on nomenclature and indexing. Professor L. F. Audrieth, of the University of Illinois, will serve as editor-in-chief of Volume III of Inorganic Syntheses. The collection and checking of syntheses for this volume are now under way, and contributions should be sent directly to Professor Audrieth. The Board asks contributors to adhere to the style followed in previous volumes and to submit drawings and manuscripts in triplicate. It is hoped that future volumes can appear at intervals of two to three years. 

The editors take great pleasure in announcing the election of Professor E. G. Rochow of Harvard University and Professor G. Therald Moeller of the University of Illinois to membership on the Editorial Board. Janet Scott has accepted membership on the Board, after having served so faithfully and conscientiously as consultant on nomenclature and indexing for Volumes II and III. 

CAS achievements especially relevant to substance information include systematic chemical nomenclature and indexing concise numerical substance identification embodied in CAS Registry Numbers the computer-readable connection tables employed by the CAS Chemical Registry System the... 

Naming and Indexing of Chemical Substances for Chemical Abstracts, Chemical Abstracts Service, American Chemical Society, Washington, D.C., 1992. Nomenclature of Organic Chemist, lUPAC, Pergamon Press, New York, 1979. 

Part I contains entries referring to the names of compounds according to the Chemical Abstracts Systematic Nomenclature (see Index Guide, Chemical Abstracts vol 76, 1972) The systematic name is followed by Chemical Abstracts Registry Number m brackets (see Chemical Abstracts Registry Handbook 1965-71 and Supplements) and page number... 

The simplest kind of formula is a compositional formula or empirical formula, which lists the constituent elements in the atomic proportions in which they are present in the compound. For such a formula to be useful in lists or indexes, an order of citation of symbols (hierarchy) must be agreed. Such hierarchies, often designated seniorities or priorities, are commonly used in nomenclature. For lists and indexes, the order is now generally recommended to be the alphabetical order of symbols, with one very important exception. Because carbon and hydrogen are always present in organic compounds, C is always cited first, H second and then the rest, in alphabetical order. In non-carbon-containing compounds, strict alphabetical order is adhered to. 

A perusal of the Chemical Abstracts index since the 1970s shows a number of unexpected claimed usages for pentazines and pentazoles in biochemical and agricultural literature. In all cases these turn out to be very poor misusage of nomenclature and no pentazole or pentazine compounds are involved. The best stimulant to renew experimental pentazole chemistry would be an industrial use. 

The Pesticide Index (ref. 14) lists the following categories of pesticides acaricides, attractants, chemosterilants, defoliants, fungicides, herbicides, insecticides, molluscicides, nematicides, plant regulators, repellents, and rodenticides. Listings are in alphabetical order with structural and molecular formulae for single chemical entities. Other data include CAS nomenclature and number Wiswesser Line Notation LD-50 and test animal data when available physical appearance and safety information. Also provided are a CAS nomenclature index separate molecular (line) formulae of chemicals identified by their common names a separate section of Wiswesser line notations, also with common names an appendix of manufacturers, and an appendix of recent publications dealing with pesticide names. 

A useful atlas of chiral molecules has appeared the major monoterpenoids of known absolute configuration are illustrated, with a literature coverage to the end of 1971.3 The reader should beware of printing errors e.g. (+)-/ -irone lacks a methyl group at C-2, (—)-(R)-a-cyclogeraniol lacks a double bond between C-2 and C-3, and (+)-S-carotene has only 39 carbon atoms (p. 131) carvotanacetone is incorrectly indexed and the nomenclature and presentation of thujane monoterpenoids is different from that used in these Reports. 

This index consists of an alphabetical listing of CA Index Names, each of which identifies a specific chemical substance linked to the appropriate CA abstract number. Chemical Substance Indexes (and the earlier Subject Indexes) reflect changes in chemical nomenclature, and in particular the revision of nomenclature implemented for the ninth Collective Index period. (See Section 3.2 and Chapter 7 for a description of the changes to CA Index Names and stereochemical descriptors.)... 

Major changes in CAS nomenclature were made at the beginning of the ninth Collective Index period (1972), giving what became widely known as 9C1 nomenclature. This is described in the publication Naming and Indexing of Chemical Substances for Chemical Abstracts (Appendix IV to the CAS 1992 Index Guide, but also available separately). 

Nomenclature was then largely stable for organic compounds until 2006 further changes introduced are described in Section 3.2.2 and at appropriate places in the next chapter. Current CAS policy is described in the updated Naming and Indexing of Chemical Substances for Chemical Abstract, 2007 edition, available at cas.org. 

Nomenclature Committee of the International Union of Biochemistry and Molecular Biology (NC-IUBMB). Enzyme Nomenclature Recommendations of the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology on the Nomenclature and Classification of Enzyme-Catalysed Reactions. Published in Enzyme Nomenclature 1992 [Academic Press, San Diego, California, ISBN 0-12-227164-5 (hardback), 0-12-227165-3 (paperback)] with Supplement 1 (1993), Supplement 2 (1994), Supplement 3 (1995), Supplement 4 (1997), and Supplement 5 (in Eur.J. Biochem. 1994, 223, 1—5 Eur. J. Biochem. 1995, 232, 1—6 Eur.J. Biochem. 1996, 237, 1—5 Eur. J. Biochem. 1997, 250, 1—6, and Eur.J. Biochem. 1999, 264, 610—650, respectively) [Copyright lUBMB] and online at http //www.chem.qmuLac.uk/iubmb/enzyme/index.html). 

The user of indexes must become familiar with the rules of nomenclature and the history of their development. 

The users of an abstract journal have a right to expect good nomenclature in the make-up of abstracts and indexes. It is the policy of Chemical Abstracts to accept and use the nomenclature as recommended by the Nomenclature, Spelling, and Pronunciation Committee of the American Chemical Society and as approved by the International Union of Pure and Applied Chemistry. A special effort is made to use good, consistent, systematic nomenclature in the subject indexing of Chemical AbstraHs with an adequate supply of cross references. These subject indexes are sometimes used as a source of nomenclature information in addition to their use as a key. 

Definitive Report of the Commission on the Reform of the Nomenclature of Organic Chemistry. Translation with comment and index by Austin M. Patterson. 10 cents. 

Highlights in American chemical nomenclature activity have been (1) the adoption in 1915 of systematic naming, with inverted organic entries, for the indexing of chemical compounds by Chemical Abstracts, (2) the publication in 1940 of The Ring Index by Austin M. Patterson and Leonard T. Capell (this activity was sponsored jointly by the National Research Council and the American Chemical Society), and (3) the publication in 1945 by Chemical Abstracts of The Naming and Indexing of Chemical Compounds by Chemical Abstracts. The last two are very useful publications. 

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