title: 5-Ethyl-4a-meth-oxy-1,3-dimethyl-4a,5-dihydro-benzo[g]pteridine-2,4(1H,3H)dione.
abstract: The title compound, C(15)H(18)N(4)O(3), was formed by the reaction of methanol with 5-ethyl-1,3-dimethyl-alloxazinium perchlorate. Its structure mimics those of possible flavin inter-mediates in flavoenzymes. The heterocyclic rings are substituted with methyl, ethyl and meth-oxy groups. The central tricyclic skeleton is bent due to the presence of an sp(3) C atom. There are weak inter-molecular C-H⋯O inter-actions in the structure, forming a three-dimensional network.
authors.forename: Petra
authors.initials: P
authors.lastname: Ménová
authors.forename: Václav
authors.initials: V
authors.lastname: Eigner
authors.forename: Radek
authors.initials: R
authors.lastname: Cibulka
authors.forename: Jan
authors.initials: J
authors.lastname: Cejka
authors.forename: Hana
authors.initials: H
authors.lastname: Dvořáková