A substituent that donates electron density to a molecule.
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C28H22N8O6
Benzenamine, 4-[[4-(trifluoromethyl)phenyl]azo]-
Dimethyl cis-1,2,3,4,4a,5,8,8a-Octahydro-1-oxo-8-(phenylthio)-isoquinoline-2,8a-dicarboxylate