IUPAC Name: 2-Chloro-1-methylimidazole 
Following is the structure of 1H-Imidazole,2-chloro-1-methyl- (CAS NO.253453-91-7):
               
Empirical Formula: C₄H₅ClN₂
Molecular Weight: 116.5489 g/mol
Molar Refractivity: 29.85 cm³
Molar Volume: 91.8 cm³
Density: 1.26 g/cm³
Flash Point: 83.7 °C
Index of Refraction: 1.563
Surface Tension: 38.7 dyne/cm
Enthalpy of Vaporization: 45.11 kJ/mol
Boiling Point: 214.8 °C at 760 mmHg
Vapour Pressure of 1H-Imidazole,2-chloro-1-methyl- (CAS NO.253453-91-7): 0.153 mmHg at 25 °C
Product Categories of 1H-Imidazole,2-chloro-1-methyl- (CAS NO.253453-91-7): HALIDE; blocks; Imidazoles; Imidazol & Benzimidazole; Building Blocks; Imidazole
Canonical SMILES: CN1C=CN=C1Cl
InChI: InChI=1S/C4H5ClN2/c1-7-3-2-6-4(7)5/h2-3H,1H3
InChIKey: VSCQFRRKWFQPOA-UHFFFAOYSA-N

Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
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.
Hazard Note: Irritant

 1H-Imidazole,2-chloro-1-methyl- , its cas register number is 253453-91-7. It also can be called 2-Chloro-1-methyl-1H-imidazole .