Titlebook: Chemical Structures 2; The International La Wendy A. Warr Conference proceedings 1993 Springer-Verlag Berlin Heidelberg 1993 Atom.Chemical

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Relative Configurations in Stereochemical Substructure Search,tereochemical search capability could be implemented by extending the present search system to determine the stereochemical validity of a topological substructure match. However, much of the stereochemistry in the Registry is described only in terms of relative configurations. When relative stereoch

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The Du Pont Global Technical Information System,amed SCION, consists of a chemical file and a document file. A unique feature of this system is that both Du Pont proprietary files and publicly available files on STN International can be searched using the same MESSENGER command language. The chemical file contains structures, Du Pont accession nu

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Chemical Structure Registration for Beilstein Online,hich corresponds to the Beilstein Handbook of Organic Chemistry and covers the chemical literature from 1830, is available online on STN International and Dialog. This paper describes the structure registration system, which has been developed at the Beilstein Institute and used in the construction

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GEMINI: A Generalised Connection Table Language and Interpreter,ctural information. Such a program is useful for format conversion or as a front-end to chemical application software. This program has been implemented (GEMINI), and is discussed with examples..There are only three fundamental ways in which connection table formats differ: what information is store

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,Rings — The Importance of Being Perceived,o complement other structural analyses. Finding those rings necessary and sufficient for unambiguous representation, in an efficient manner and for the worst cases is not trivial. Issues include the 2-D representation of 3-D structures, the definition and perception of a ring set, and whether vertex

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