chemical relationship is substitutent group from 2023-03-18T23:49:31Z obo:chebi#is_substituent_group_from carboxylatoacetyl group (CHEBI:58957) is substituent group from malonate(1-) (CHEBI:30795) Group A is a substituent group from Chemical B if A represents the functional part of A and includes information about where it is connected. A is not itself a chemical with a fully formed chemical graph, but is rather a partial graph with one or more connection points that can be used to attach to another chemical graph, typically as a functionalization.