16720-04-0 2-Chloro-6,6-dimethyl-7,8,9,10-tetrahydro-6H-dibenzo(b,d)pyran-3-ol 6H-DIBENZO(b,d)PYRAN-3-OL, 2-CHLORO-6,6-DIMETHYL-7,8,9,10-TETRAHYDRO-