(5-amino-2,4-dihydroxyphenyl)arsonic acid

2,4-二羟基苯磺酸单铵盐

7-羟基苯并二氢吡喃-2-酮

3,4,6,7-tetrahydrobenzo<1,2-b:5,4-b'>dipyran-2,8-dione

2-(3,5-二羟基苯基)-6-羟基苯并呋喃