IUPAC Name: Methyl 3,5-dihydroxybenzoate 
Following is the structure of Benzoic acid,3,5-dihydroxy-, methyl ester (CAS NO.2150-44-9):
                   
Empirical Formula: C₈H₈O₄
Molecular Weight: 168.1467
EINECS: 218-426-2
Index of Refraction: 1.587
Molar Refractivity: 41.78 cm³
Molar Volume: 124.1 cm³
Density: 1.354 g/cm³
Flash Point: 147.6 °C
Melting point: 167-170 °C(lit.)
Surface Tension: 57.6 dyne/cm
Enthalpy of Vaporization: 61.74 kJ/mol
Boiling Point: 349.4 °C at 760 mmHg
Vapour Pressure: 2.33E-05 mmHg at 25 °C
Appearance of Benzoic acid,3,5-dihydroxy-, methyl ester (CAS NO.2150-44-9): slightly yellow to beige fine crystalline powder
Product Categories: Building Blocks for Dendrimers; Functional Materials; C8 to C9; Carbonyl Compounds; Esters
Canonical SMILES: COC(=O)C1=CC(=CC(=C1)O)O
InChI: InChI=1S/C8H8O4/c1-12-8(11)5-2-6(9)4-7(10)3-5/h2-4,9-10H,1H3
InChIKey: RNVFYQUEEMZKLR-UHFFFAOYSA-N

 Benzoic acid,3,5-dihydroxy-, methyl ester (1:1) (CAS NO.2150-44-9) hasn't been listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65.

Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany: 3
Hazard Note: Irritant

 Benzoic acid,3,5-dihydroxy-, methyl ester , its cas register number 2150-44-9. It also can be called 3,5-Dihydroxybenzoic acid methyl ester ; Methyl 3,5-dihydroxybenzoate ; Methyl alpha-resorcylate ; alpha-Resorcinol carboxylic acid methyl ester ; and alpha-Resorcylic acid, methyl ester .
 Benzoic acid,3,5-dihydroxy-, methyl ester (CAS NO.2150-44-9) is not compatible with strong oxidizing agents, strong bases. And also prevent it to broken down into hazardous decomposition products: carbon monoxide, carbon dioxide. However, its hazardous polymerization has not been reported.