IUPAC Name: 2,3,4-Trifluorobenzenesulfonyl chloride 
Following is the structure of 2,3,4-Trifluorobenzenesulphonyl Chloride (CAS NO.175278-08-7):
                                 
Empirical Formula: C₆H₂ClF₃O₂S
Molecular Weight: 230.5921 g/mol
Molar Refractivity: 40.73 cm³
Molar Volume: 138.7 cm³
Density: 1.662 g/cm³
Flash Point: 100.7 °C
Index of Refraction: 1.499
Surface Tension: 37.9 dyne/cm
Enthalpy of Vaporization: 46.04 kJ/mol
Boiling Point: 242.8 °C at 760 mmHg
Vapour Pressure of 2,3,4-Trifluorobenzenesulphonyl Chloride (CAS NO.175278-08-7): 0.0517 mmHg at 25 °C
Product Categories of 2,3,4-Trifluorobenzenesulphonyl Chloride (CAS NO.175278-08-7): SULFONYLHALIDE; Aromatic Halides (substituted); Benzenesulfonyl chloride; Organic Building Blocks; Sulfonyl Halides; Sulfur Compounds 
Sensitive: Moisture Sensitive
Canonical SMILES: C1=CC(=C(C(=C1F)F)F)S(=O)(=O)Cl
InChI: InChI=1S/C6H2ClF3O2S/c7-13(11,12)4-2-1-3(8)5(9)6(4)10/h1-2H
InChIKey: XFTDZYFHXRZLEF-UHFFFAOYSA-N

Hazard Codes: C
Risk Statements: 34
R34:Causes burns.
Safety Statements: 26-36/37/39-45-39-37-36
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.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S39:Wear eye / face protection.
S37:Wear suitable gloves.
S36:Wear suitable protective clothing.
RIDADR: UN 3265 8/PG 2
WGK Germany: 3
Hazard Note: Corrosive
HazardClass: 8
PackingGroup: II

 2,3,4-Trifluorobenzenesulphonyl Chloride , its cas register number is 175278-08-7. It also can be called Benzenesulfonyl chloride, 2,3,4-trifluoro- .