3-Hydroxy-2-naphthoic acid

3-Hydroxy-2-naphthoic acid is an organic compound with the formula C10H6(OH)(CO2H).

It is a precursor to some azo dyes and pigments.

[1] 3-Hydroxy-2-naphthoic acid is a precursor to many anilides, such as Naphthol AS, which are reactive toward diazonium salts to give deeply colored azo compounds.

Azo coupling of 3-hydroxy-2-naphthoic acid gives many dyes as well.

[2] This article about an organic compound is a stub.

Lithol Rubine BK is one of many dyes made from 3-hydroxy-2-naphthoic acid. Notice that the coupling occurs adjacent to the hydroxy group.