Design and implementation of an on‐line chemical dictionary (CHEMLINE)

Robert J. Schultheisz, Donald F. Walker and Kay L. Kannan

Journal of the American Society for Information Science, 1978, vol. 29, issue 4, 173-179

Abstract: CHEMLINE, the chemical nomenclature adjunct file to TOXLINE, was designed and implemented through a three‐step process. The file was first available for on‐line interactive searching in January 1974 as the TOXLINE Chemical Dictionary using the STIMS/RECON software system. The second version was available from the National Library of Medicine (NLM) using the ELHILL2 software system. The third version is currently available from the NLM using the ELHILL3 software system. The file content was determined by the availability of data and the needs of the TOXLINE users. The data in CHEMLINE is obtained from the CAS Registry system files. The organization of the file was based on the requirements of the three search and retrieval systems. Changes in file structures required evaluation of the data and the development of new specifications prior to creating the file in each software system. Techniques for creating inverted file terms for search purposes from chemical names, molecular formula, ring information, and Wis‐wesser Line Notations are described.

Date: 1978
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