The 3-Chloro-2,5-difluoropyridine, with the CAS registry number 851179-00-5, is also called pyridine, 3-chloro-2,5-difluoro-. It is a kind of organics, and should be stored in the dry and cool environment. And the molecular formula of the chemical is C₅H₂ClF₂N.

The characteristics of 3-Chloro-2,5-difluoropyridine are as followings: (1)ACD/LogP: 1.46; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.46; (4)ACD/LogD (pH 7.4): 1.46; (5)ACD/BCF (pH 5.5): 7.56; (6)ACD/BCF (pH 7.4): 7.56; (7)ACD/KOC (pH 5.5): 148.09; (8)ACD/KOC (pH 7.4): 148.09; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 12.89 Å²; (13)Index of Refraction: 1.479; (14)Molar Refractivity: 29.22 cm³; (15)Molar Volume: 103 cm³; (16)Polarizability: 11.58×10^-24cm³; (17)Surface Tension: 35.5 dyne/cm; (18)Density: 1.451 g/cm³; (19)Flash Point: 40.5 °C; (20)Enthalpy of Vaporization: 36.47 kJ/mol; (21)Boiling Point: 143.3 °C at 760 mmHg; (22)Vapour Pressure: 6.75 mmHg at 25°C. 

Preparation of 3-Chloro-2,5-difluoropyridine: This chemical can be prepared by (5-chloro-3,6-difluoro-pyridin-2-yl)-hydrazine. The reaction will need reagent aq. CuSO₄. The reaction time is 2 hours with heating, and the yield is about 67%. 

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: Fc1cnc(F)c(Cl)c1
(2)InChI: InChI=1/C5H2ClF2N/c6-4-1-3(7)2-9-5(4)8/h1-2H
(3)InChIKey: ATKDHGGWYZLPPJ-UHFFFAOYAV