The 2,3-Dihydroxypyridine, with the CAS registry number 16867-04-2 and EINECS registry number 240-887-3, has the systematic name of 3-hydroxypyridin-2(1H)-one. It is a kind of khaki to grey or brown crystalline powder, and belongs to the following product categories: Pyridines, Pyrimidines, Purines and Pteredines; Pyridines derivates; Heterocyclic Compounds. And the molecular formula of this chemical is C₅H₅NO₂. What's more, it is usually used as medicine intermediate.

The physical properties of 2,3-Dihydroxypyridine are as followings: (1)ACD/LogP: -0.82; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.82; (4)ACD/LogD (pH 7.4): -0.84; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 8.57; (8)ACD/KOC (pH 7.4): 8.18; (9)#H bond acceptors: 3; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 29.54 Å²; (13)Index of Refraction: 1.593; (14)Molar Refractivity: 27.33 cm³; (15)Molar Volume: 80.5 cm³; (16)Polarizability: 10.83×10^-24cm³; (17)Surface Tension: 58.2 dyne/cm; (18)Density: 1.379 g/cm³; (19)Flash Point: 188 °C; (20)Enthalpy of Vaporization: 73.58 kJ/mol; (21)Boiling Point: 387.2 °C at 760 mmHg; (22)Vapour Pressure: 1.35E-07 mmHg at 25°C.

Uses of 2,3-Dihydroxypyridine: It can react with piperidine and formaldehyde to produce 3-hydroxy-4-piperidin-1-ylmethyl-1H-pyridin-2-one. This reaction will need solvent methanol. The reaction time is 2 hours with heating, and the yield is about 62%.   

You should be cautious while dealing with this chemical. There's limited evidence of a carcinogenic effect of this chemical. And it also irritates eyes, respiratory system and skin. Therefore, you had better take the following instructions: Do not breathe dust; Wear suitable protective clothing, gloves and eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: c1cc(c(=O)[nH]c1)O
(2)InChI: InChI=1/C5H5NO2/c7-4-2-1-3-6-5(4)8/h1-3,7H,(H,6,8)
(3)InChIKey: GGOZGYRTNQBSSA-UHFFFAOYAS

The toxicity data is as follows: