Fig 7. The distribution of MOLPRINT2D features of the odorants.

(a) shows the range of molecular weight of the odorants. Most of the odorants have a molecular weight between 100–150 Daltons. (b) shows the number of rotatable bonds present in the given set of odorants. The number of rotatable bonds varies from 1 to 11. (c) shows the number of aromatic rings present in the odorants. 80% of the odorants are aliphatic. (d) and (e) show the number of hydrogen bond acceptors and donor atoms respectively in the odorants. There are a maximum of 5 hydrogen bond acceptors and 3 hydrogen bond donor atom in the odorants.