Fig. 20From: PubChem atom environmentsTop-10 most frequent atom environments with radius r = 2 unique to Substance and Compound, respectively. Atom environments are ranked by their incidence in the respective database: a Substance; and b Compound. Incidence provided in absolute numbers due to very low corresponding percentages. Dashed lines indicate aromatic bonds as perceived using the aromaticity model OEAroModelOpenEye in the OpenEye Scientific Software, Inc. OEChem C++ toolkit [57].Back to article page