Hydroxynaphthoic acid may refer to any of several isomers.[1]

Hydroxynaphthoic Acids
Compound Registry number (RN) melting point (°C)
2-Hydroxy-1-naphthoic acid 2283-08-1 156–157
3-Hydroxy-1-naphthoic acid 19700-42-6 248 – 249
4-Hydroxy-1-naphthoic acid 7474-97-7 188 – 189
5-Hydroxy-1-naphthoic acid 2437-16-3 236
6-Hydroxy-1-naphthoic acid 2437-17-4 213
7-Hydroxy-1-naphthoic acid 2623-37-2 256
8-Hydroxy-1-naphthoic acid 1769-88-6 169
1-Hydroxy-2-naphthoic acid 86-48-6 200
3-Hydroxy-2-naphthoic acid 92-70-6 222
4-Hydroxy-2-naphthoic acid 1573-91-7 225 – 226
5-Hydroxy-2-naphthoic acid 2437-18-5 215 – 216
6-Hydroxy-2-naphthoic acid 16712-64-4 245 – 248
7-Hydroxy-2-naphthoic acid 613-17-2 274
8-Hydroxy-2-naphthoic acid 5776-28-3 229

References

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  1. ^ Gerald Booth (2005). "Naphthalene Derivatives". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_009. ISBN 9783527303854..