The molecular structure of 3,4-Difluorotoluene (CAS NO.2927-34-6):

IUPAC Name: 1,2-Difluoro-4-methylbenzene 
Molecular Weight: 128.119346 g/mol
Molecular Formula: C₇H₆F₂ 
Density: 1.122 g/cm³ 
Boiling Point: 111.5 °C at 760 mmHg 
Flash Point: 25 °C
Index of Refraction: 1.456
Molar Refractivity: 31.06 cm³
Molar Volume: 114.1 cm³
Surface Tension: 26.5 dyne/cm 
Enthalpy of Vaporization: 33.56 kJ/mol
Vapour Pressure: 26.7 mmHg at 25 °C 
Storage Temp.: flammables area
XLogP3-AA: 2.5 
H-Bond Acceptor: 2
Exact Mass: 128.043757
MonoIsotopic Mass: 128.043757 
Heavy Atom Count: 9
Canonical SMILES: CC1=CC(=C(C=C1)F)F
InChI: InChI=1S/C7H6F2/c1-5-2-3-6(8)7(9)4-5/h2-4H,1H3
InChIKey: FZMPLKVGINKUJZ-UHFFFAOYSA-N
Product Categories: Fluorin-contained toluene series; Aromatic Hydrocarbons (substituted) & Derivatives; Halogen toluene; Miscellaneous; Aryl; C7; Halogenated Hydrocarbons; Fluorinated benzene series

Hazard Codes: F
Risk Statements: 10 
R10:Flammable.
Safety Statements: 16-29-33 
S16:Keep away from sources of ignition. 
S29:Do not empty into drains. 
S33:Take precautionary measures against static discharges.
RIDADR: UN 1993 3/PG 3
WGK Germany: 3
Hazard Note: Flammable
HazardClass: 3
PackingGroup: II

 3,4-Difluorotoluene (CAS NO.2927-34-6) is also named as 1,2-Difluor-4-methylbenzol ; 1,2-Difluoro-4-methylbenzene ; Benzene, 1,2-difluoro-4-methyl- ; 3,4-Difluoromethylbenzene . 3,4-Difluorotoluene (CAS NO.2927-34-6) is colorless to light yellow liquid.