(E)-1-(5-Hy­droxy-2,2-dimethyl-2H-chromen-6-yl)-3-(3,4,5-trimeth­oxy­phen­yl)prop-2-en-1-one

The title compound, C(23)H(24)O(6), crystallizes with two independent mol­ecules (A and B) in the asymmetric unit. The dihedral angles between the benzopyran ring and the α,β-unsaturated ketone unit and between the α,β-unsaturated ketone group and the benzene ring are 9.4 (10) and 12.96 (13)°, respectively, in mol­ecule A and 1.40 (17) and 4.44 (17)°, respectively, in mol­ecule B. The two meth­oxy groups at the meta positions of the benzene ring are close to being coplanar with the ring [C—O—C—C = 6.2 (3) and −1.4 (3)° in mol­ecule A and −4.2 (4) and 3.7 (3)° in mol­ecule B], whereas the third meth­oxy group, at the para position, is (+)-anti­clinal with respect to the benzene ring [C—O—C—C = 81.7 (3)°] in mol­ecule A and is (−)-synclinal with respect to the benzene ring [C—O—C—C = −103.2 (3)°] in mol­ecule B. In both independent mol­ecules, the hy­droxy group is involved in an intra­molecular O—H⋯O hydrogen bond.