IUPAC Name: 3-Chloropyridine-4-carbaldehyde
Canonical SMILES: C1=CN=CC(=C1C=O)Cl
InChI: InChI=1S/C6H4ClNO/c7-6-3-8-2-1-5(6)4-9/h1-4H
InChIKey: ZVGDKOQPJCOCLI-UHFFFAOYSA-N
Molecular Weight: 141.55506 [g/mol]
Molecular Formula: C₆H₄ClNO
XLogP3-AA: 0.9
H-Bond Donor: 0
H-Bond Acceptor: 2 
Product Categories: pharmacetical; Pyridines 
Index of Refraction: 1.592
Molar Refractivity: 35.99 cm³
Molar Volume: 106.2 cm³ 
Surface Tension: 49.8 dyne/cm
Density: 1.332 g/cm³
Flash Point: 89.8 °C
Enthalpy of Vaporization: 46.14 kJ/mol
Boiling Point: 224.9 °C at 760 mmHg
Vapour Pressure: 0.0888 mmHg at 25 °C
Melting Point of 3-Chloropyridine-4-carboxaldehyde (CAS NO.72990-37-5): 58-62 °C(lit.)

Hazard Codes:Xn
Risk Statements: 22-36/38-43 
R22:Harmful if swallowed. 
R36/38:Irritating to eyes and skin. 
R43:May cause sensitization by skin contact.
Safety Statements: 37/39 
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany of 3-Chloropyridine-4-carboxaldehyde (CAS NO.72990-37-5): 3

  3-Chloropyridine-4-carboxaldehyde (CAS NO.72990-37-5), its Synonyms are 3-Chloro-4-formylpyridine ; 3-Chloro-4-pyridinecarboxaldehyde ; 3-Chloroisonicotinaldehyde ; 4-Pyridinecarboxaldehyde,3-chloro- .