The 3-Chloro-5-hydroxypyridine, with the CAS registry number 74115-12-1 and EINECS registry number 277-727-7, has the systematic name and IUPAC name of 5-chloropyridin-3-ol. It is a kind of orange-brown to brown crystalline powder, and belongs to the following product categories: Pyridines, Pyrimidines, Purines and Pteredines; Halides; Pyridines; Chloropyridines; Halopyridines. And the molecular formula of this chemical is C₅H₄ClNO.

The physical properties of 3-Chloro-5-hydroxypyridine are as followings: (1)ACD/LogP: 1.81; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.79; (4)ACD/LogD (pH 7.4): 1.48; (5)ACD/BCF (pH 5.5): 13.29; (6)ACD/BCF (pH 7.4): 6.56; (7)ACD/KOC (pH 5.5): 219.14; (8)ACD/KOC (pH 7.4): 108.21; (9)#H bond acceptors: 2; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 22.12 Å²; (13)Index of Refraction: 1.583; (14)Molar Refractivity: 31.12 cm³; (15)Molar Volume: 93 cm³; (16)Polarizability: 12.33×10^-24cm³; (17)Surface Tension: 54 dyne/cm; (18)Density: 1.392 g/cm³; (19)Flash Point: 150.2 °C; (20)Enthalpy of Vaporization: 58.92 kJ/mol; (21)Boiling Point: 324.7 °C at 760 mmHg; (22)Vapour Pressure: 0.000128 mmHg at 25°C.

Uses of 3-Chloro-5-hydroxypyridine: It can react with hexafluoropropene to produce 3-chloro-5-(1,1,2,3,3,3-hexafluoro-propoxy)-pyridine. This reaction will need reagent K₂CO₃, and the solvent acetonitrile. The reaction time is 9 hours with the temperature of 25°C, and the yield is about 42%.    

You should be cautious while dealing with this chemical. It irritates eyes, respiratory system and skin, and it is also harmful if swallowed. Therefore, you had better take the following instructions: 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: Clc1cc(O)cnc1
(2)InChI: InChI=1/C5H4ClNO/c6-4-1-5(8)3-7-2-4/h1-3,8H
(3)InChIKey: TUIDQYRZDZRHPQ-UHFFFAOYAK