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The reference materials listed below provide information about features and search techniques for individual databases on STN.
For resources specific to various types of searches (e.g., bibliographic searching, substance searching. patent searching) please see the STN Training pages.
For more information on each STN database, please refer to the Database Summary Sheets.
RTECS® (Registry of Toxic Effects of Chemical Substances)
Find general information about STN searching and resources for advanced searching topics.
Information on Chemical Supplier Program