Product Name

  • Name

    1-Methyl-1H-pyrazole-5-carbaldehyde

  • EINECS
  • CAS No. 27258-33-9
  • Article Data16
  • CAS DataBase
  • Density 1.14 g/cm3
  • Solubility
  • Melting Point
  • Formula C5H6N2O
  • Boiling Point 218.9 °C at 760 mmHg
  • Molecular Weight 110.115
  • Flash Point 86.2 °C
  • Transport Information
  • Appearance
  • Safety 26-36/37/39
  • Risk Codes 22-36/37/38
  • Molecular Structure Molecular Structure of 27258-33-9 (1-Methyl-1H-pyrazole-5-carbaldehyde)
  • Hazard Symbols IrritantXi
  • Synonyms Pyrazole-5-carboxaldehyde,1-methyl- (8CI);1-Methylpyrazole-5-carboxaldehyde;
  • PSA 34.89000
  • LogP 0.23260

1-Methyl-1H-pyrazole-5-carbaldehyde Chemical Properties


IUPAC Name: 2-Methylpyrazole-3-carbaldehyde
Molecular Formula: C5H6N2O
Molecular Weight: 110.11 g/mol
Canonical SMILES: CN1C(=CC=N1)C=O
InChI: InChI=1S/C5H6N2O/c1-7-5(4-8)2-3-6-7/h2-4H,1H3
Product Categories: Aldehyde; Building Blocks; Pyrazole
H-Bond Acceptor: 2
Index of Refraction: 1.552 
Molar Refractivity: 30.71 cm3 
Molar Volume: 96 cm3 
Polarizability: 12.17×10-24 cm3 
Surface Tension: 42 dyne/cm 
Density: 1.14 g/cm
Flash Point: 86.2 °C 
Enthalpy of Vaporization: 45.53 kJ/mol 
Boiling Point: 218.9 °C at 760 mmHg 
Vapour Pressure of 1-Methyl-1H-pyrazole-5-carbaldehyde (CAS NO.27258-33-9): 0.123 mmHg at 25 °C

1-Methyl-1H-pyrazole-5-carbaldehyde Specification

 1-Methyl-1H-pyrazole-5-carbaldehyde (CAS NO.27258-33-9), its Synonyms are 1-Methyl-1H-pyrazole-5-carboxaldehyde 97% ; 1-Methyl-1H-pyrazole-5-carbaldehyde) ; 2-Methyl-2H-pyrazole-3-carbaldehyde ; 5-Formyl-1-methyl-1H-pyrazole .

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