Molecular structure of 6-Hydroxy-1-naphthoic acid (CAS NO.2437-17-4) is:

Product Name: 6-Hydroxy-1-naphthoic acid
CAS Registry Number: 2437-17-4
Systematic Name: 6-hydroxynaphthalene-1-carboxylic acid 
Empirical Formula: C₁₁H₈O₃
Molecular Weight: 188.1794
Melting point: 210°C
Molar Volume: 134.5 cm³
Surface Tension: 69.4 dyne/cm
Density: 1.399 g/cm³
Flash Point: 237.5 °C
Enthalpy of Vaporization: 74.16 kJ/mol
Boiling Point: 445.7 °C at 760 mmHg
Vapour Pressure: 1E-08 mmHg at 25°C
Product Categories: Naphthalene derivatives

Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36/37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.

 6-Hydroxy-1-naphthoic acid , its cas register number is 2437-17-4. It also can be called 6-Hydroxynaphthoic Acid ; 6-Hydroxynaphthalene-1-Carboxylic Acid ; 6-Hydroxy-1-Naphthalenecarboxylic Acid . And, It is a white to light yellow crystal powder.