rac-(2R,3R)-tetrahydro-2H-pyran-2,3-diyl bis(4-methylbenzenesulfonate)

2H-吡喃-4(3H)-酮

[2-(3-nitrophenyl)-2-oxoethyl] 4-methylbenzenesulfonate

[2-(4-methylphenyl)-2-oxoethyl] 4-methylbenzenesulfonate

[2-(4-bromophenyl)-2-oxoethyl] 4-methylbenzenesulfonate