4344-87-0
4344-87-0 structure
- Name: 3-Methyl-3-pyrazolin-5-one
- Chemical Name: 3-Methyl-3-Pyrazolin-5-One
- CAS Number: 4344-87-0
- Molecular Formula: C4H6N2O
- Molecular Weight: 98.103
- Create Date: 2018-07-24 15:34:55
- Modify Date: 2026-07-01 18:45:39
| Name | 3-Methyl-3-Pyrazolin-5-One |
|---|---|
| Synonyms |
3-METHYL-2-PYRAZOLIN-5-ONE (PILOT)
5-Methyl-1H-pyrazole-3(2H)-one 5-Hydroxy-3-methyl-1H-pyrazole 3 METHYLPYRAZOLONE 3-Methyl-1H-pyrazol-5-ol, 1,2-Dihydro-5-methyl-3H-pyrazol-3-one 3-Methyl-5-hydroxypyrazole 5-Methyl-1H-pyrazole-3-ol 3-METHYL-3-PAZOLIN-5-ONE 3-methyl-2-pyrazolin-5-one 3H-Pyrazol-3-one, 1,2-dihydro-5-methyl 3-METHYL-3-PYRAZOLIN-5-ONE MFCD00010705 5-METHYL-3-HYDROXY PYRAZOLE 5-Methyl-1,2-dihydro-3H-pyrazole-3-one 1,2-Dihydro-5-methyl-3H-pyrazol-3-one 5-Methyl-1H-pyrazol-3(2H)-one 5-Methyl-2,4-dihydro-3H-pyrazol-3-one 3-Hydroxy-5-methylpyrazole 3-Methyl-3-pyrazoline-5-one 1,2-Dihydro-3-methyl-5H-pyrazol-5-one 3-Hydroxy-5-methyl-1H-pyrazole |
| 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 |
| 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 |
| Precursor 10 | |
|---|---|
| DownStream 10 | |
![methyl-4 dihydro-3,7 pyrazolo[1,5,4-ef]benzodiazepine-1,5 one-6 structure](https://image.chemsrc.com/caspic/252/112698-24-5.png)
| 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% |