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. Author manuscript; available in PMC: 2010 Jan 15.
Published in final edited form as: J Chem Inf Model. 2008 Jul 8;48(7):1311–1324. doi: 10.1021/ci700342h

Table 10.

The percentages of the 10 most frequent topologies present in each of the databases examined. The numbers in boldface refer to the rank in the merged database; the corresponding scaffold topologies are displayed in Figure 6a. The numbers at the bottom are the sum of the 10 percentages above. At least half the population of each database lies above the horizontal line segment dividing the corresponding column.

Chem Navigator DNP Drugs PubChem PC actives DSSTox WOMBAT GDB
2. 22.694 4. 11.831 1. 19.548 1. 20.740 1. 13.642 4. 29.808 3. 13.200 10. 41.721
1. 19.646 10. 9.249 4. 16.630 2. 15.457 3. 11.101 14. 25.057 1. 12.901 14. 24.765


3. 11.196 18. 9.226 3. 11.379 3. 11.509 4. 10.771 1. 13.997 2. 10.160 1. 15.414

5. 6.474 14. 8.633 14. 6.492 4. 8.212 2. 7.652 10. 5.517 4. 6.588 4. 4.755


6. 5.609 3. 6.643 10. 5.945 5. 4.033 10. 4.743 3. 5.492 5. 5.101 18. 3.953
7. 3.590 1. 6.140 26. 5.872 10. 3.354 18. 4.681 18. 3.372 10. 3.779 46. 2.765



4. 2.979 26. 5.356 2. 4.887 6. 2.824 14. 3.837 26. 3.218 6. 3.510 57. 2.425
8. 2.505 48. 2.872 18. 3.939 7. 2.573 11. 3.130 2. 1.865 11. 2.741 58. 0.977
9. 2.486 2. 2.437 8. 3.319 14. 2.466 26. 2.721 8. 1.737 18. 2.399 114. 0.910
13. 2.094 37. 1.625 23. 2.553 8. 2.204 7. 2.220 23. 1.252 7. 2.375 122. 0.610

79.273 64.012 80.564 73.372 64.498 91.315 62.754 98.295