biostudies-literatureUnknown66(Pt 2)Zhang WIn the crystal structure of the title compound, C(22)H(17)BrO(6), the quinone ring makes a dihedral angle of 81.84 (3)° with the benzene ring. The chiral C atoms, viz. the ring C atoms bearing the hydr-oxy and bromo-phenyl substituents, exhibit R and S configurations, respectively. The terminal ethyl group of the -CO(2)CH(2)CH(3) group is disordered over two sets of sites with site-occupancy factors of 0.64 (1) and 0.36 (1). Inter-molecular O-H⋯O inter-actions further stabilize the crystal packing.Acta crystallographica. Section E, Structure reports onlineo388https://www.ebi.ac.uk/biostudies/studies/S-EPMC2979899biostudies-literatureEthyl (2S,4R)-4-(4-bromo-phen-yl)-2-hydr-oxy-5,10-dioxo-3,4,5,10-tetra-hydro-2H-benzo[g]chromene-2-carboxyl-ate.PMC2979899Zhang WZhang GWang YXu XfalseEthyl (2S,4R)-4-(4-bromo-phen-yl)-2-hydr-oxy-5,10-dioxo-3,4,5,10-tetra-hydro-2H-benzo[g]chromene-2-carboxyl-ate.In the crystal structure of the title compound, C(22)H(17)BrO(6), the quinone ring makes a dihedral angle of 81.84 (3)° with the benzene ring. The chiral C atoms, viz. the ring C atoms bearing the hydr-oxy and bromo-phenyl substituents, exhibit R and S configurations, respectively. The terminal ethyl group of the -CO(2)CH(2)CH(3) group is disordered over two sets of sites with site-occupancy factors of 0.64 (1) and 0.36 (1). Inter-molecular O-H⋯O inter-actions further stabilize the crystal packing.2010-01-01T00:00:00Z2010 Jan2025-04-26T05:08:12.593Z2019-03-27T00:00:56ZS-EPMC29798992157980910.1107/S1600536810001315