Molecular Structure of 5-Fluoro-2-methylbenzoyl chloride (CAS NO.21900-39-0):

IUPAC Name: 5-Fluoro-2-methylbenzoyl chloride 
Molecular Formula: C₈H₆ClFO
Molecular Weight: 172.58 
Index of Refraction: 1.518
Molar Refractivity: 41.31 cm³
Molar Volume: 136.3 cm³
Surface Tension: 36.8 dyne/cm
Density: 1.265 g/cm³
Flash Point: 82 °C
Enthalpy of Vaporization: 44.82 kJ/mol
Boiling Point: 211.9 °C at 760 mmHg
Vapour Pressure: 0.178 mmHg at 25 °C
storage temp.: Keep Cold
Sensitive: Moisture Sensitive
Canonical SMILES: CC1=C(C=C(C=C1)F)C(=O)Cl
InChI: InChI=1S/C8H6ClFO/c1-5-2-3-6(10)4-7(5)8(9)11/h2-4H,1H3
InChIKey: HBAQRSDZSVESSF-UHFFFAOYSA-N
Product Categories: Aromatic Halides (substituted); Acid Halides; Carbonyl Compounds; Organic Building Blocks

Safety Information of 5-Fluoro-2-methylbenzoyl chloride (CAS NO.21900-39-0):
Hazard Codes: C
Risk Statements: 34 
R34:Causes burns.
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.
RIDADR: UN 3265 8/PG 2
WGK Germany: 3
Hazard Note: Corrosive
HazardClass: 8
PackingGroup: II

 5-Fluoro-2-methylbenzoyl chloride (CAS NO.21900-39-0), its Synonyms are Benzoyl chloride,5-fluoro-2-methyl- ; o-Toluoylchloride, 5-fluoro- (8CI) ; 2-Methyl-5-fluorobenzoyl chloride ; 5-Fluoro-o-toluoyl chloride .