2H,8H-Benzo[1,2-b:3,4-b']dipyran,2H,8H-benzo[1,2-b:5,4-b']dipyran-2-one deriv.
CAS No. 158443-93-7
2H,8H-Benzo[1,2-b:3,4-b']dipyran,2H,8H-benzo[1,2-b:5,4-b']dipyran-2-one deriv.; (-)-Khelmarin C; Khelmarin C