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Does Reaxys contain CAS Registry Numbers?

April 26, 2017CAS contain Numbers reaxys Registry

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Does Reaxys contain CAS Registry Numbers?

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Yes, but not comprehensively. Beilstein substance records created prior to 1994 ususally contain RNs as chemical identifiers. Some records added since 1994 do not. Not all Gmelin substance records have RNs. A single compound record in Reaxys may contain several CAS RNs. This is because the two systems use different registration rules: CAS assigns RNs more narrowly than Beilstein or Gmelin. CAS RNs should not be confused with Beilstein (BRN) and Gmelin (GRN) registry numbers.