The 14 most frequently observed (a) sidechains, (b) linkers, and (c) scaffolds
from the generic fragment library. The number below each fragment in
(parentheses) indicates the number of occurrences in ~13M ZINC drug-like
molecules. Purple atoms with labels indicate attachment points and their
accompanying Sybyl mol2 bond types. Other atoms are colored as:
white=hydrogen, tan=carbon, red=oxygen,
blue=nitrogen, yellow=sulfur, green=fluorine, bright
green=chlorine. Double and aromatic bonds are not shown. The entries
marked with * denote the 15 most common fragments and were used as
anchors to seed de novo growth.