Comparison of Beilstein CrossFirePlusReactions and the selective reaction databases under ISIS

To answer the question "are small selective databases now redundant", a com parison was made between the smaller, more selective reaction databases [un der ISIS (Integrated Scientific Information System)] and a larger, more com prehensive database (Beilstein, via Crossfire) using references, exact reac tions, named reactions, and transformations. The results show a large overl ap of reference data with a smaller overlap of reaction data. Depending on the search, the overall view is that the databases are complementary.