26535-35-3 2H,8H-Benzo[1,2-b:5,4-b']dipyran-10-propanoic acid, 5-methoxy-2,2,8,8-tetramethyl- 2H,8H-Benzo[1,2-b:5,4-b']dipyran-10-propionic acid, 5-methoxy-2,2,8,8-tetramethyl- Acide eriostoique Eriostoic acid NSC83435