| Identification | More | [Name]
3-Methyl-2-pyrazolin-5-one | [CAS]
108-26-9 | [Synonyms]
3-METHYL-2-PYRAZOLIN-5-ONE
3-METHYL-4,5-DIHYDRO-1H-PYRAZOL-5-ONE
3-METHYL-5-PYRAZOLONE
AURORA KA-6219
TIMTEC-BB SBB004372
2-Pyrazolin-5-one, 3-methyl-
3-methyl-2-pyrazolin-5-on
3-Methyl-pyrazolon-(5)
5-Methyl-2,4-dihydro-3H-pyrazol-3-one
2,4-dihydro-5-methyl-3H-pyrazol-3-one
5-methyl-1,2-dihydro-pyrazol-3-one
5-Methyl-3H-pyrazol-3-one
3-Methyl-2-pyrazolin-5-one, 98+%
Methyl-5-pyrazolone
2,4-dihydro-5-methyl-3h-pyrazol-3-on
3-METHYL-5-PYRAZOLONE 98+%
5-Methyl-2,4-dihydro-pyrazol-3-one
3-Methyl-5-oxo-2-pyrazoline
3-Methyl-1H-pyrazol-5(4H)-one
3-Methyl-4,5-dihydro-1H-pyrazole-5-one | [EINECS(EC#)]
203-565-3 | [Molecular Formula]
C4H6N2O | [MDL Number]
MFCD00020699 | [Molecular Weight]
98.1 | [MOL File]
108-26-9.mol |
| Chemical Properties | Back Directory | [Appearance]
Yellowish powder | [Melting point ]
220-224 °C | [Boiling point ]
183.6°C (rough estimate) | [density ]
1.1890 (rough estimate) | [refractive index ]
1.4327 (estimate) | [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
Slightly soluble in ethanol. | [form ]
powder to crystal | [pka]
13.10±0.40(Predicted) | [color ]
White to Light yellow | [Usage]
3-Methyl-5-pyrazolone is used as intermediate for the manufacture of dyestuffs as well as for agrochemicals. | [InChI]
InChI=1S/C4H6N2O/c1-3-2-4(7)6-5-3/h2H2,1H3,(H,6,7) | [InChIKey]
NHLAPJMCARJFOG-UHFFFAOYSA-N | [SMILES]
N1=C(C)CC(=O)N1 | [CAS DataBase Reference]
108-26-9(CAS DataBase Reference) | [NIST Chemistry Reference]
3H-pyrazol-3-one, 2,4-dihydro-5-methyl-(108-26-9) | [EPA Substance Registry System]
108-26-9(EPA Substance) |
| Safety Data | Back Directory | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S24/25:Avoid contact with skin and eyes . | [WGK Germany ]
3 | [RTECS ]
UQ9451500 | [TSCA ]
Yes | [HS Code ]
29331990 | [Toxicity]
rat,LDLo,unreported,600mg/kg (600mg/kg),Biochemical Pharmacology. Vol. 14, Pg. 1325, 1965. |
| Hazard Information | Back Directory | [Chemical Properties]
3-Methyl-2-pyrazolin-5-one is yellowish powder
| [Uses]
3-Methyl-2-pyrazolin-5-one is used as intermediate for the manufacture of dyestuffs as well as for agrochemicals.
| [Uses]
3-Methyl-2-pyrazolin-5-one is used in the preparation of spirocyclic [indole-3,4'-pyrano[2,3-c]pyrazole] by reacting with isatins and malonitrile in the presence of sodium bromide as electrolyte. |
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