Nomenclature notation

The Commission on Biochemical Nomenclature (CBN) of the International Union of Pure and Applied Chemistry (IUPAC) and of the International Union of Biochemistry and Molecular Biology (IUBMB) has issued many recommendations and rules on peptides and amino acids. These recommendations and rules concern nomenclature, notations, abbreviations, symbols, etc. (see www.chem.qmul.ac.uk/iupac/AminoAcid/ and www.chem.qmul.ac.uk/iubmb/). 

The abbreviated form of nomenclature notation is described in Melson.78 Two examples here, (5) and (6), should make this clear and other examples are contained in Table 1. Phosphorus is given precedence in this review, although, strictly, oxygen should precede phosphorus. 

CA s Directions for Abstractors and Section Editors is a 46-page booklet containing information on assignments, procedures, style, forms, abbreviations, nomenclature, notation, and numerous miscellaneous details, as well as a full discussion of the nature of the abstract desired. This booklet is indexed by subjects. Chemical Abstracts has a special 14-page set of Instructions for Abstracting Patents, and, for the sake of emphasis, the more important directions for abstracting are frequently distributed as a separate group in so-called Abstracted Directions. ... 

Tbs contents of this little book are to a great extent a transcript of the notes of my lectures delivered at the Boyal College of Chemistry during the Winter Session of 1865-66. These notes have been considerably amplified only in the earlier chapters, on nomenclature, notation, and tike atomioity of elemente—subjeots which, in their modem developments, have undergone such profound ehangee as to render their somewhat more extended treatment necessary to the comprehension of the remainder of Ihe bode. 

The ready communication of structural information is fundamental to the development of chemistry. The most universally understood form of such information is the chemical structure diagram, such as that illustrated in Figure 1. However, it is frequently Inconvenient to convey structural information directly (e.g., in conversation), so a number of other methods of representing chemical structures have been developed to satisfy a variety of needs. These methods include nomenclatures, notations, connection tables, adjacency matrices, molecular fonnulas, and fragment codes [1 2]. 

Figure 17. Bonchev s organic nomenclature/notation based on the graph center concept.

FIGURE 3.2 (a) The relationship between the three nomenclature notations for fatty acids. Eicosapentaenoic acid (EPA) is shown as an example, (b) Representative structures of the common polyene fatty acids of the n-3 and n-6 families. 

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