5-Hydroxy-1-methylpyrazole

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Names

[ CAS No. ]:
33641-15-5

[ Name ]:
5-Hydroxy-1-methylpyrazole

[Synonym ]:
1H-Pyrazol-5-ol, 1-methyl-
1-Methylpyrazol-5-ol
1-methyl-5-hydroxy-1H-pyrazole
5-HYDROXY-1-METHYL-1H-PYRAZOLE
1-Methyl-1H-pyrazol-5-ol
N-methylpyrazolone
1-methyl-1,2-dihydro-pyrazol-3-one
5-Hydroxy-1-Methyl-5-pyrazole
3-hydroxy-2-methylpyrazole
REF DUPL: 5-Hydroxy-1-methyl-1H-pyrazole
1-methyl-5-hydroxypyrazole
1-Methyl-1H-pyrazol-5-ol,1-Methyl-5-hydroxy-1H-pyrazole,1-Methyl-5-hydroxypyrazole

Chemical & Physical Properties

[ Density]:
1.2±0.1 g/cm3

[ Boiling Point ]:
217.7±13.0 °C at 760 mmHg

[ Melting Point ]:
110-114ºC

[ Molecular Formula ]:
C4H6N2O

[ Molecular Weight ]:
98.103

[ Flash Point ]:
85.4±19.8 °C

[ Exact Mass ]:
98.048012

[ PSA ]:
38.05000

[ LogP ]:
0.10

[ Vapour Pressure ]:
0.1±0.4 mmHg at 25°C

[ Index of Refraction ]:
1.568

MSDS

Click to get detail MSDS

Safety Information

[ Hazard Codes ]:
Xn: Harmful;

[ Risk Phrases ]:
22-37/38-41

[ Safety Phrases ]:
26-39

[ HS Code ]:
2933199090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • Methyl 3-methoxyacrylate
  • monomethylhydrazine
  • METHYL 3-METHOXYACRYLATE

DownStream

  • 5-chloro-1-Methyl-1H-pyrazole-4-carbaldehyde
  • (2-methylpyrazol-3-yl) 2,4-dichlorobenzoate

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

  • 3-carboxy-5-hydroxy-1-methylpyrazole
  • 3-Methoxycarbonyl-5-hydroxy-1-methylpyrazole
  • Ethyl 5-Hydroxy-1-methylpyrazole-3-carboxylate
  • 4-[3-(4,5-dihydroisoxazol-3-yl)-4-methylsulfonyl-2-methylbenzoyl]-5-hydroxy-1-methylpyrazole
  • 5-hydroxy-1-methyl-5-[4-(trifluoromethyl)phenyl]pyrrolidin-2-one
  • 5-hydroxy-1,3-benzothiazole-2-sulfonamide