3-Methyl-5-pyrazolone
3-甲基-5-吡唑啉酮
Also known as: 3-Methyl-2-pyrazolin-5-one, 2,4-Dihydro-5-methyl-3H-pyrazol-3-one, 5-Methyl-2,4-dihydro-3H-pyrazol-3-one, 3-Methyl-1H-pyrazol-5(4H)-one, 3-Methyl-4,5-dihydro-1H-pyrazole-5-one
- CAS No.
- 108-26-9
- Jingsj CID
- J-27706-2
- Molecular Formula
- C4H6N2O
- Chinese Name
- 3-甲基-5-吡唑啉酮
- Molecular Weight
- 98.103 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
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Request a quotePhysicochemical Properties
| Melting Point | 220-224 °C |
|---|---|
| Boiling Point | 309.7ºC at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 141.1ºC |
Frequently Asked Questions
What is the CAS number of 3-Methyl-5-pyrazolone?
108-26-9
What are the molecular formula and molecular weight of 3-Methyl-5-pyrazolone?
C4H6N2O, molecular weight 98.103 g/mol
Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026