Product Name

  • Name

    Cyclopenta[b]pyridine

  • EINECS 208-564-1
  • CAS No. 533-37-9
  • Article Data38
  • CAS DataBase
  • Density 1.066 g/cm3
  • Solubility
  • Melting Point 117 °C
  • Formula C8H9N
  • Boiling Point 212.2 °C at 760 mmHg
  • Molecular Weight 119.166
  • Flash Point 67.2 °C
  • Transport Information
  • Appearance clear colorless to brownish liquid
  • Safety 26-36
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 533-37-9 (Cyclopenta[b]pyridine)
  • Hazard Symbols IrritantXi
  • Synonyms 6,7-Dihydro-5H-cyclopenta(b)pyridine;CPP;5H-Cyclopenta[b]pyridine,6,7-dihydro-;
  • PSA 12.89000
  • LogP 1.57030

2,3-Cyclopentenopyridine Chemical Properties

IUPAC Name: 6,7-Dihydro-5H-cyclopenta[b]pyridine
Synonyms of 2,3-Cyclopenopyridine (CPPY) (CAS NO.533-37-9): 6,7-Dihydro-5H-cyclopenta(b)pyridine
CAS NO: 533-37-9
Molecular Formula: C8H9N
Molecular Weight: 119.16
Molecular Structure:
EINECS: 208-564-1
H bond acceptors: 1
H bond donors: 0
Freely Rotating Bonds: 0
Polar Surface Area: 12.89Å2
Index of Refraction: 1.567
Molar Refractivity: 36.51 cm3
Molar Volume: 111.7 cm3
Surface Tension: 43.8 dyne/cm
Density: 1.066 g/cm3
Flash Point: 67.2 °C
Enthalpy of Vaporization: 43.02 kJ/mol
Boiling Point: 212.2 °C at 760 mmHg
Vapour Pressure: 0.255 mmHg at 25°C 
Appearance: clear colorless to brownish liquid
Product Categories of 2,3-Cyclopenopyridine (CPPY) (CAS NO.533-37-9): Pyridines derivates;API intermediates 
SMILES: n1cccc2c1CCC2
InChI: InChI=1/C8H9N/c1-3-7-4-2-6-9-8(7)5-1/h2,4,6H,1,3,5H2
InChIKey: KRNSYSYRLQDHDK-UHFFFAOYAU
Std. InChI: InChI=1S/C8H9N/c1-3-7-4-2-6-9-8(7)5-1/h2,4,6H,1,3,5H2
Std. InChIKey: KRNSYSYRLQDHDK-UHFFFAOYSA-N

2,3-Cyclopentenopyridine Safety Profile

Safety Information about 2,3-Cyclopenopyridine (CPPY) (CAS NO.533-37-9):
Hazard Codes: IrritantXi
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36: Wear suitable protective clothing.
WGK Germany: 3

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