Following is the structure of 2,3-Dichloro-5-nitropyridine (CAS NO.22353-40-8):
                     
Empirical Formula: C₅H₂Cl₂N₂O₂
Molecular Weight: 192.9876 g/mol
Molar Refractivity: 40.67 cm³
Molar Volume: 118.4 cm³
Density: 1.629 g/cm³
Flash Point: 115.8 °C
Index of Refraction: 1.603
Surface Tension: 59.3 dyne/cm
Enthalpy of Vaporization: 48.56 kJ/mol
Boiling Point: 267.9 °C at 760 mmHg
Vapour Pressure: 0.0131 mmHg at 25 °C
Product Categories of 2,3-Dichloro-5-nitropyridine (CAS NO.22353-40-8): Pyridine; Boronic Acid;Pyridines 
Appearance of 2,3-Dichloro-5-nitropyridine (CAS NO.22353-40-8): Light yellow Cryst
SMILES: Clc1cc([N+]([O-])=O)cnc1Cl
InChI: InChI=1/C5H2Cl2N2O2/c6-4-1-3(9(10)11)2-8-5(4)7/h1-2H
InChIKey: XLPDVAVQKGDHNO-UHFFFAOYAY

Hazard Codes: Xi
Risk Statements: 36/37/38-43 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R43:May cause sensitization by skin contact.
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.
HazardClass: IRRITANT

 2,3-Dichloro-5-nitropyridine , its cas register number is 22353-40-8. It also can be called 2,3-Dichlor-5-nitropyridin ; and Pyridine, 2,3-dichloro-5-nitro- .