4-Ethynyl-1H-pyrazole

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Names

[ CAS No. ]:
57121-49-0

[ Name ]:
4-Ethynyl-1H-pyrazole

[Synonym ]:
1H-Pyrazole,4-ethynyl
4-ethynylpyrazole
1H-Pyrazole, 4-ethynyl-
4-Ethinylpyrazol
4-Ethynyl-1H-pyrazole

Chemical & Physical Properties

[ Density]:
1.2±0.1 g/cm3

[ Boiling Point ]:
238.5±13.0 °C at 760 mmHg

[ Molecular Formula ]:
C5H4N2

[ Molecular Weight ]:
92.099

[ Flash Point ]:
114.3±12.8 °C

[ Exact Mass ]:
92.037445

[ PSA ]:
28.68000

[ LogP ]:
0.50

[ Vapour Pressure ]:
0.1±0.5 mmHg at 25°C

[ Index of Refraction ]:
1.554

Safety Information

[ Hazard Codes ]:
Xi

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • 4-formylethynyl-1-(2,4,6-trimethylbenzoyl)pyrazole

DownStream

  • 1-(1H-Pyrazol-4-yl)ethanone
  • 4-Ethynyl-1-methyl-1H-pyrazole

Related Compounds

  • 1-Boc-4-ethynyl-1H-pyrazole
  • 1-Cyclobutyl-4-ethynyl-1H-pyrazole
  • 1-Cyclopropyl-4-ethynyl-1H-pyrazole
  • 1-(1-ethoxyethyl)-4-ethynyl-1H-pyrazole
  • 1-(2,2-Difluoroethyl)-4-ethynyl-1H-pyrazole
  • 1-(Cyclopropylmethyl)-4-ethynyl-1H-pyrazole