Index to the Ring Systems Handbook

In the Ring Systems File, containing 84,000 ring systems, the entries are arranged in order of their ring analysis, that means the short description of the cyclic skeletons (Sect. 2.1.3.4). Each entry provides the information shown in Fig. 73. 

The illustrative structural diagram with the numerical locants on the constituent atoms is particularly helpful when the systematic Index Names of derivatives of the appropriate ring system are sou t. With these names a literature search can be rapidly carried out either online or in the CAS printed services. 

The index to the Ring Systems Handbook consists of two parts  

All the systematic CA Index Names - with references to the corresponding Ring File Numbers - are listed alphabetically in the Ring Name Index (Fig. 75). In this case, as they are only the names of parent compounds, inversion of the CA Index Names is impossible. 

Ring analysis number of component rings, ring sizes and elemental analysis of the component rings 

---

For the organic chemist, knowledge of, and access to, the more familiar components of the printed products of Chemical Abstracts is still desirable CA abstracts CA Volume Indexes and CA Collective Indexes CA Index Gnide CAS Source Index (CASSI) Registry Handbook Number Section the Ring Systems Handbook and CA Selects. 

The Ring Systems Handbook (1993 edition) contains all the presently known basic structural skeletons, the parent compounds of cyclic substances, i.e. ring systems without substituents. The handbook includes approximately 84,000 ring and 288 cage systems. It is a complete work of reference which provides access to the systematic CA Index Name, the CAS Registry Number and the molecular formula of a ring system or which describes to a complex substance name the chemical structure. The handbook contains three parts ... 

In the Ninth Collective Chemical Substance Index, which covers the period from 1972 to 1976, the structure of the substance in the problem can be easily identified using the substance name and the CAS Registry Number. The structure diagram and numerical locants of every substance included in the Ring Systems Handbook is illustrated in the Chemical Substance Index to Chemical Abstracts. 

Under the admirably liberal policy of the founding and subsequent editors (Arnold Weissberger, Edward C, Taylor, and Peter Wipf), individual authors have sometimes used outdated or alternative systems of nomenclature perceived as convenient for their particular subject(s). To minimize this complication in the index, nearly all system names therein follow or approximate to those currently recommended in the Chemical Abstracts Service s Ring System Handbook (2003 edition and supplements). 

---