Collective indexes

Chemisches Zentrallblatt. This periodical, published by the Deutsche Chemische Gesellschaft to 1945, originated in 1830 as the Phar-maceutisches Zentrallblatt, the name was changed in 1850 to Chemisches-Pharmaceutisches Centrallblatt, again in 1856 to Chemisches Centrall-blatt, and in 1907 to Chemisches Zentrallblatt. Collective indexes are available from 1870. The abstracts, particularly for organic chemistry, are very detailed to 1939. 

Quite naturally there is a certain amount of arbitrariness in this system, although the lUPAC nomenclature is followed. The preferred Chemical Abstracts index names for chemical substances have been, with very few exceptions, continued unchanged (since 1972) as set forth in the Ninth Collective Index Guide and in a journal article. Any revisions appear in the updated Index Guide new editions appear at 18-month intervals. Appendix VI is of particular interest to chemists. Reprints of the Appendix may be purchased from Chemical Abstracts Service, Marketing Division, P.O. Box 3012, Columbus, Ohio 43210. 

In eadier Hterature carbonochloridic esters are referred to as chloroformates or chlorocarbonates because of the stmctural parallel with formic acid [64-18-6]., chloroformic acid, and carbonic acid. Before 1972, chloroformates were indexed in Chemicaly4bstracts, Eighth Collective Index, under formic acid, chloroesters whereas, in the Ninth Collective Index (Dec. 1990), they are referred to as carbonochloridic acid esters. Table 1 fists the common names of carbonochloridates or chloroformates, the CAS Registry Numbers, and the formulas. 

Chemical Abstracts Ninth Collective Index, Index Guide, Appendix IV F. Specialized Substances, par. 215, pp. 2021—2051 (1972—1976). In the Tenth and Eleventh Collective Indexes, the corresponding page numbers are 1921—1951 and 1931—1971, respectively. 

Chemical Abstracts Ei th Collective Index, pp. 7004F and 12481S (1967—1971) Ninth Collective Index, p. 9668F (1972—1976). 

Chemical Abstracts Momendature (Collective Index Humber) ... 

Chenical Abstracts Mcnenclature (Collective Index Number) (Registry Number)... 

Chcnical Abstracts NoMendature (Collective Index Nwber) ... 

Chemical Abstracts Nonenclature (Collective Index fkiirtier) (Registry Ihiirtier)... 

Chaiical Abstracts Hoiienclature (Collective Index Nuaber) (Registry Hiniber)... 

CheMical Abstracts Nonendature (Collective Index Muil>er) (Registry Ninrt>er)... 

Chemical Abstracts Nomenclature (Collective Index Mjafcer) ... 

Chenlcal Abstracts Honenclature (Collective Index Niaber) ... 

Chealcal Abstracts tiaaenclature (Collective Index Ninber) ... 

Chemical Abstracts Homenclature (Collective Index Hunberl (Registry Muiaber)... 

Both common and systematic names of compounds are used throughout this volume, depending on which the Editor-in-Chief felt was more appropriate The Chemical Abstracts indexing name for each title compound, if it differs from the title name, is given as a subtitle Systematic Chemical Abstracts nomenclature, used in both the 9th and 10th Collective Indexes for the title compound and a selection of other compounds mentioned in the procedure, is provided in an appendix at the end of each preparation. Registry numbers, which are useful in computer searching and identification, are also provided in these appendixes. Whenever two names are concurrently in use and one name is the correct Chemical Abstracts name, that name is adopted. For example, both diethyl ether and ethyl ether are normally used. Since ethyl ether is the established Chemical Abstracts name for the 8lh Collective Index, it has been used in this volume The 9th Collective Index name is 1,1 -oxybisethane, which the Editors consider too cumbersome. 

If the listed chemical identity is actually a product trade name (e.g., dicofol), the 9th Collective Index name is listed below it in brackets. You may report either name in this case. 

Are quality records collected, indexed, accessed, filed, stored, maintained, and dispositioned in accordance with documented procedures ... 

This review includes most of the published articles from the defined area and excludes only imidazoquinolines, which were reviewed in Weissberger-Taylor s series The Chemistry of Heterocyclic Compounds (81MI1). Comprehensive Heterocyclic Chemistry II (96MI1) mentioned only some of the azoloquinolines in the first edition the authors omitted citations about this type of compounds. The trend toward interest in these compounds can be illustrated by the number of citations in Chemical Abstract as shown in Table I. Besides Chemical Abstracts Substance/Subject (Collective) Indexes, the MDL database search has been used. 

No references to the original literature are given in the text. This is because the introduction of such references would have considerably increased the size and therefore the price of the book. However, a discussion on the literature of analytical chemistry is given in the Appendix. With the aid of the various volumes mentioned therein — which should be available in all libraries of analytical chemistry — and the Collective Indexes of Chemical Abstracts or of British Chemical Abstracts, little difficulty will, in general, be experienced in finding the original sources of most of the determinations described in the book. 

Compilations of Reference Spectra There are several compilations of reference mass spectra available of which the oldest is the American Petroleum Institute (Ref 82) collection of spectra obtained mostiy on the older type instruments. Recent collections index spectra variously, eg, under reference number (Ref 19). molecular weight (Refs 12 19), molecular formula (Ref 19), fragment ion values (Ref 19), and base peak (Refs 12 19). A quarterly journal, Archives of Mass Spectral Data ... 

Chemical Abstracts (1992) Twelfth Collective Index. Index Guide. American Chemical Society, Columbus OH [1.2]. 

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