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Figure 2
Aromaticity in (a) flavin adenine dinucleotide (FAD) and (b) dihydroflavine-adenine dinucleotide (FDA). The number of π electrons for (a) is 18 and that for (b) is 20. In (b) the outer rings have six and ten π electrons, respectively. (a) is perceived as an aromatic system, whereas in (b) only the outer rings are aromatic. This figure was produced by Marvin Sketch v.16.9.12 (

Journal logoSTRUCTURAL
ISSN: 2059-7983
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