1-Pyrazoline, 3,3,5,5-tetramethyl-4-methylene-

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Names

[ CAS No. ]:
55790-78-8

[ Name ]:
1-Pyrazoline, 3,3,5,5-tetramethyl-4-methylene-

[Synonym ]:
3,5-Dihydro-4-methylen-4H-pyrazole
3,3,5,5-tetramethyl-4-methylidene-1-pyrazoline
1-Pyrazoline,3,3,5,5-tetramethyl-4-methylene
4-methylene-3,3,5,5-tetramethylpyrazoline
4,5-Dihydro-3,3,5,5-tetramethyl-4-methylene-3H-pyrazole
3,3,5,5-tetramethyl-4-methylene-4,5-dihydro-3H-pyrazole
3,5-dihydro-3,3,5,5-tetramethyl-4-methylene-4H-pyrazole
3,3,3,5-Tetramethyl-4-methylen-1-pyrazolin

Chemical & Physical Properties

[ Density]:
0.93g/cm3

[ Boiling Point ]:
139.5ºC at 760mmHg

[ Molecular Formula ]:
C8H14N2

[ Molecular Weight ]:
138.21000

[ Flash Point ]:
29.2ºC

[ Exact Mass ]:
138.11600

[ PSA ]:
24.72000

[ LogP ]:
1.43680

[ Index of Refraction ]:
1.492

Safety Information

[ HS Code ]:
2933199090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • 3,3,5,5-tetramethylpyrazol-4-one
  • methylidene triphenyl phosphorane
  • methyl triphenylphosphonium bromide

DownStream

Customs

[ HS Code ]: 2933199090

[ Summary ]:
2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Related Compounds

  • 2-Cyclopenten-1-one, 2,3,5,5-tetramethyl-4-methylene- (9CI)
  • 3,3,5,5-tetramethyl-4H-pyrazole
  • 4-(3-chloro-1-methyl-propoxy)-3,3,5,5-tetramethyl-4,5-dihydro-3H-[1,2,4]diazaphosphole 4-oxide
  • 2-acetonyl-3,3,5,5-tetramethyl-δ8,9-octalin
  • 3,3,5,5-Tetramethyl-4-(2,2,4,4-tetramethylcyclobutyliden)-1-pyrazolin
  • tert-butyl 3,3,5,5-tetramethyl-4-oxopiperidine-1-carboxylate