Buy article online - an online subscription or single-article purchase is required to access this article.
organic compounds
In the title molecule (alternative name: 8-hydroxy-4-methyl-9-phenylthio-7,8,9,10-tetrahydro-2H–benzo[f]chromen-2-one; C20H18O3S) the tetrahydrobenzene ring is in a half-chair conformation. The planes of the coumarin and thiophenyl rings have a dihedral angle of 126.31 (5)°. The crystal structure is stabilized by O—HO hydrogen bonds involving carbonyl and hydroxy O atoms.