3-Methyl-3-pyrazolin-5-one

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Names

[ CAS No. ]:
4344-87-0

[ Name ]:
3-Methyl-3-pyrazolin-5-one

[Synonym ]:
MFCD00010705
3-Methyl-3-pyrazolin-5-one
3-Methyl-5-hydroxypyrazole
5-Methyl-2,4-dihydro-3H-pyrazol-3-one
3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-
3-methyl-2-pyrazolin-5-one

Chemical & Physical Properties

[ Density]:
1.3±0.1 g/cm3

[ Boiling Point ]:
309.7 °C at 760 mmHg

[ Melting Point ]:
223-225 °C(lit.)

[ Molecular Formula ]:
C4H6N2O

[ Molecular Weight ]:
98.103

[ Exact Mass ]:
98.048012

[ PSA ]:
48.65000

[ LogP ]:
-1.08

[ Index of Refraction ]:
1.599

Safety Information

[ Symbol ]:

GHS07

[ Signal Word ]:
Warning

[ Hazard Statements ]:
H315-H319-H335

[ Precautionary Statements ]:
P261-P305 + P351 + P338

[ Personal Protective Equipment ]:
dust mask type N95 (US);Eyeshields;Gloves

[ Hazard Codes ]:
Xi: Irritant;

[ Risk Phrases ]:
R36/37/38

[ Safety Phrases ]:
S26-S37/39

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

[ HS Code ]:
2933199090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • Ethyl acetoacetate
  • ETHYL 2-ACETYL-3-HYDROXY-2-BUTENOATE
  • tert-Butyl acetoacetate
  • 2-(2,2-Ethylendioxypropyl)-1,3,4-oxadiazol
  • Dehydroacetic acid
  • 5-ethoxy-3-methyl-1H-pyrazole(SALTDATA: HCl)
  • 1-amino-6-hydroxy-6-methyl-5,6-dihydrouracil
  • methyl-4 dihydro-3,7 pyrazolo[1,5,4-ef]benzodiazepine-1,5 one-6
  • 3-Methyl-5-aminoisoxazole
  • 2-Butynoic acid

DownStream

  • pyrazothion
  • 4,4-dibromo-5-methyl-2H-pyrazol-3-one
  • 2-ethyl-5-methyl-4H-pyrazol-3-one
  • Pyruvic acid
  • Crotonaldehyde
  • 2-Butyn-1-ol
  • (E)-But-2-Enal
  • 4,4-dichloro-3-methyl-1H-pyrazol-5-one
  • Methyl 2-butynoate
  • 3,4-Dimethyl-1H-pyrazol-5-ol

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%

Articles

3-Methyl-3-pyrazolin-5-one. Zhang Z, et al.

Acta Crystallogr. Sect. E Struct. Rep. Online 60(2) , o315-16, (2004)

The crystal and molecular structure of 3-methyl-3-pyrazolin-5-one. De Camp WH and Stewart JM.

Acta Crystallogr. B 27(6) , 1227-32, (1971)

Aliphatic aldehydes in the synthesis of condensed 4-alkyl (cycloalkyl)-2-amino-3-cyano-4H-pyrans. Klokol GV, et al.

Chem. Heterocycl. Comp. 35(10) , 1183-86, (1999)


More Articles

Related Compounds

  • 3-Methyl-3-pyrazolin-5-one
  • 1-tert-Butyl-3-methyl-3-pyrazolin-5-one
  • 1-(4-Fluorophenyl)-3-methyl-3-pyrazolin-5-one
  • 1-(3-methylphenyl)-3-methyl-3-pyrazolin-5-one
  • 1-(4-chlorophenyl)-3-methyl-3-pyrazolin-5-one
  • 1-(3,4-DIMETHYLPHENYL)-3-METHYL-3-PYRAZOLIN-5-ONE
  • 2-{2-[1-(4-butylphenyl)-5-oxopyrrolidin-3-yl]-1H-1,3-benzodiazol-1-yl}-N,N-diethylacetamide
  • 4-(Diphenylmethyl)piperazine-1-carboximidamide sulfate
  • 2-((1-(4-chlorophenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl)thio)-N-(2-(trifluoromethyl)phenyl)acetamide
  • 4-((Cyclohexylamino)methyl)benzoic acid hydrochloride
  • 1-[(2,4-Dichlorophenyl)methyl]-N-(1,1-dimethylethyl)-2-methyl-1H-indole-3-methanamine
  • 2-Methoxy-6-(pyrazol-1-yl)-benzonitrile
  • 1H-3-Benzazepin-7-ol, 8-chloro-2,3,4,5-tetrahydro-5-(3-iodophenyl)-3-methyl-, (S)-
  • (4-Methyl-tetrahydro-furan-2-yl)-methanol
  • N-(1-cyanocyclopentyl)-2-[4-(4-fluorobenzenesulfonyl)-1,4-diazepan-1-yl]acetamide
  • 4,5,6,7-Tetrahydrobenzo[d]isoxazole-3-carbaldehyde