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@egonwillighagen @ESchymanski @bigcat_UM @wikidata https://t.co/8Ig4IDjHm1 (ICCS 1987) "the full CAS Registry Structure file in 1982 —then about 5 million substances... currently more than 8 million structures". https://t.co/uLr1idOTDJ (1992) "CAS currentl