IUPAC Name: (2-Chlorophenyl) N-methylcarbamate 
Synonyms of o-Chlorophenyl methylcarbamate (CAS NO.3942-54-9): 2-Chlorophenyl methylcarbamate ; 2-Chlorophenyl-N-methylcarbamate ; Etrofol ; Hopcide ; o-Chlorophenyl N-methylcarbamate ; Carbamic acid, N-methyl-, 2-chlorophenyl ester ; Carbamic acid, methyl-, 2-chlorophenyl ester ; Carbamic acid, methyl-, o-chlorophenyl ester  
InChI: InChI=1/C8H8ClNO2/c1-10-8(11)12-7-5-3-2-4-6(7)9/h2-5H,1H3,(H,10,11)
InChIKey: ZAGNMMRDHSEOPE-UHFFFAOYAX            
CAS NO:  3942-54-9                                       
Molecular Formula:  C₈H₈ClNO₂                                  
Molecular Weight: 185.6076                                               
Molecular Structure :
EINECS: 223-524-3
H bond acceptors:  3 
H bond donors:  1 
Freely Rotating Bonds:  2 
Polar Surface Area:  29.54Ų 
Index of Refraction:  1.535 
Molar Refractivity:  46.08 cm³ 
Molar Volume:  147.8 cm³  
Surface Tension:  40.3 dyne/cm 
Density:  1.255 g/cm³ 
Flash Point:  107.3 °C 
Enthalpy of Vaporization:  49.12 kJ/mol 
Boiling Point:  253.8 °C at 760 mmHg 
Vapour Pressure:  0.0179 mmHg at 25°C 

EPA Genetic Toxicology Program. Reported in EPA TSCA Inventory.

A poison by ingestion and possibly other routes. An insecticide. See also CARBAMATES. When o-Chlorophenyl methylcarbamate (CAS NO.3942-54-9) is heated to decomposition, it emits very toxic fumes of Cl⁻ and NO_x.