{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T04:18:48Z","timestamp":1785471528869,"version":"3.56.0"},"reference-count":54,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2004,11,1]],"date-time":"2004-11-01T00:00:00Z","timestamp":1099267200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Altern Lab Anim"],"published-print":{"date-parts":[[2004,11]]},"abstract":"<jats:p>Relationships between the structure and properties of chemicals can be programmed into knowledge-based systems such as DEREK for Windows (DEREK is an acronym for \u201cDeductive Estimation of Risk from Existing Knowledge\u201d). The DEREK for Windows computer system contains a subset of over 60 rules describing chemical substructures (toxophores) responsible for skin sensitisation. As part of the European Phototox Project, the rule base was supplemented by a number of rules for the prospective identification of photoallergens, either by extension of the scope of existing rules or by the generation of new rules where a sound mechanistic rationale for the biological activity could be established. The scope of the rules for photoallergenicity was then further refined by assessment against a list of chemicals identified as photosensitisers by the Centro de Farmacovigilancia de la Comunidad Valenciana, Valencia, Spain. This paper contains an analysis of the mechanistic bases of activity for eight important groups of photoallergens and phototoxins, together with rules for the prospective identification of the photobiological activity of new or untested chemicals belonging to those classes. The mechanism of action of one additional chemical, nitrofurantoin, is well established; however, it was deemed inappropriate to write a rule on the basis of a single chemical structure.<\/jats:p>","DOI":"10.1177\/026119290403200506","type":"journal-article","created":{"date-parts":[[2019,4,10]],"date-time":"2019-04-10T00:25:37Z","timestamp":1554855937000},"page":"511-524","source":"Crossref","is-referenced-by-count":17,"title":["Structure\u2013Activity Relationships and Prediction of the Phototoxicity and Phototoxic Potential of New Drugs"],"prefix":"10.1177","volume":"32","author":[{"given":"Martin D.","family":"Barratt","sequence":"first","affiliation":[{"name":"Marlin Consultancy, 10 Beeby Way, Carlton, Bedford MK43 7LW, 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