Table 4 Top ten most frequent ring counts in PubChem Compound database
From: Scaffold analysis of PubChem database as background for hierarchical scaffold-based visualization
Ring count | Frequency in PubChem (%) | Number of children |
|---|---|---|
0 | 3.12 | 1 |
1 | 14.01 | 1 |
2 | 30.74 | 2 |
3 | 25.68 | 4 |
4 | 16.03 | 10 |
5 | 6.59 | 27 |
6 | 2.10 | 97 |
7 | 0.69 | 360 |
8 | 0.37 | 1044 |
9 | 0.21 | 1948 |
Total | 99.52 | Â |