Molecular Structure of 5-Amino-1,3-dimethyl-4-pyrazolyl o-fluorophenyl ketone (CAS NO.31272-21-6):

IUPAC Name: (5-amino-1,3-dimethylpyrazol-4-yl)-(2-fluorophenyl)methanone
Empirical Formula: C₁₂H₁₂FN₃O 
Molecular Weight: 233.2416 
Surface Tension: 43 dyne/cm 
Density: 1.29 g/cm³ 
Flash Point: 210 °C 
Enthalpy of Vaporization: 67.81 kJ/mol 
Boiling Point: 423.7 °C at 760 mmHg 
Vapour Pressure: 2.19E-07 mmHg at 25°C 
Index of Refraction: 1.607 
Classification Code: Mutation data;Tumor data

 5-Amino-1,3-dimethyl-4-pyrazolyl o-fluorophenyl ketone (CAS NO.31272-21-6) was reported in CRNGDP Carcinogenesis (London).

Questionable carcinogen with experimental tumorigenic data. Mutation data reported. A flammable liquid. When heated to decomposition it emits toxic fumes of F⁻ and NO_x.

DOT Classification:  3; Label: Flammable Liquid

 5-Amino-1,3-dimethyl-4-pyrazolyl o-fluorophenyl ketone ,with CAS number of 31272-21-6,can be called Ketone, 5-amino-1,3-dimethylpyrazol-4-yl o-fluorophenyl ; Methanone, (5-amino-1,3-dimethyl-1H-pyrazol-4-yl)(2-fluorophenyl)- .

 5-Amino-1,3-dimethyl-4-pyrazolyl o-fluorophenyl ketone (CAS NO.31272-21-6) is a moderately toxic substance,with flammability, burning will produce toxic fumes of nitrogen oxides and fluoride,so it should be stored in cool and dry environment,dry powder,foam,sand, carbon dioxide,water mist can be used if something urgent happened.