1,8-Naphthalic anhydride is an organic compound with the formula C10H6(C2O3).

It is one of three isomers of naphthalic anhydride, the other two being the 1,2- and the 2,3-derivatives.

The 1,8-isomer is prepared by aerobic oxidation of acenaphthene.

These chloride groups are susceptible to displacement by amines and alkoxides,[3] giving rise, ultimately, to a large family of naphthalimides, which are used as optical brighteners.

[4] Derivatives include: Alrestatin,...