Molecular structure of 6-Chloronicotinoyl chloride (CAS NO.58757-38-3) is:

Product Name: 6-Chloronicotinoyl chloride
CAS Registry Number: 58757-38-3
IUPAC Name: 6-chloropyridine-3-carbonyl chloride
Molecular Weight: 176.00012 [g/mol]
Molecular Formula: C₆H₃Cl₂NO
XLogP3: 3.6
H-Bond Donor: 0
H-Bond Acceptor: 2
Melting Point:  48-51 °C(lit.)
Sensitive: Moisture Sensitive 
Molar Volume: 121 cm³
Surface Tension: 49.5 dyne/cm
Density: 1.454 g/cm³
Flash Point: 102.7 °C
Enthalpy of Vaporization: 48.34 kJ/mol
Boiling Point: 246.2 °C at 760 mmHg
Vapour Pressure: 0.0274 mmHg at 25°C 
Product Categories: Acidhalide ;Heterocycles ;Carbonyl Chlorides ;Pyridines ;Heterocyclic Compounds ;Chloropyridines ;Halopyridines ;Carbonyl Chlorides

Safty information about 6-Chloronicotinoyl chloride (CAS NO.58757-38-3) is:
Hazard Codes: Xi;C
Risk Statements: 36/37/38-34 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R34:Causes burns.
Safety Statements: 26-36-45-36/37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: UN 3261 8/PG 2
WGK Germany: 3
Hazard Note: Irritant
HazardClass: 8
PackingGroup: II

 6-Chloronicotinoyl chloride , its cas register number is 58757-38-3. It also can be called Buttpark 96\50-26 ; 6-Chloropyridine-3-Carbonyl Chloride ; 6-Chloronicotinoyl Chloride ; 6-Chloronicotinyl Chloride ; 6-Chloronicotinoylchloride,98% ; 3-Pyridinecarbonyl Chloride, 6-Chloro- (9CI) ; 2-Chloropyridine-5-Carbonyl Chloride ; 6-Chloronicotinoyl Chlorid .