1H-2-Benzopyran-1,3(4H)-dione
o-Toluic acid, α-carboxy-, cyclic anhydride
1,3-Isochromandione
Benzeneacetic acid, 2-carboxy-, cyclic anhydride
Homophthalic acid anhydride
Homophthalic anhydride
NSC 2825
NSC 401693
1H-Isochromene-1,3(4H)-dione
Homophtalic anhydride
3,4-Dihydro-1H-2-benzopyran-1,3-dione