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ChemicalBook--->CAS DataBase List--->108-26-9

108-26-9

108-26-9 Structure

108-26-9 Structure
IdentificationMore
[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 PropertiesBack 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.
[pka]

13.10±0.40(Predicted)
[Usage]

3-Methyl-5-pyrazolone is used as intermediate for the manufacture of dyestuffs as well as for agrochemicals.
[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 DataBack 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
Raw materials And Preparation ProductsBack Directory
[Raw materials]

1-Acetyl-2-phenylhydrazine-->Ethyl acetoacetate
[Preparation Products]

ACID YELLOW 11-->CIBACRON BRILLIANT YELLOW 3G-P-->Reactive Light Yellow M-5G-->ACID YELLOW 76 (C.I. 18850)-->Acid Yellow 127-->PROCION YELLOW H-E3G-->Neutral Red 2gl-->Reactive Yellow 18-->Acid Red 215-->Acid Yellow 117-->disodium 2,5-dichloro-4-[4-[[5-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-2-sulphonatophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate-->4-CHLOROBENZYLIDENEMALONONITRILE-->METHYL 2-BUTYNOATE-->1,2-Bis(4-pyridylcarbonyl)hydrazine-->DIRECT YELLOW 127-->Chromate(1-), bis[N-[3-[2-[4,5-dihydro-3-methyl-5-(oxo-κO)-1H-pyrazol-4-yl]diazenyl-κN1]-2-(hydroxy-κO)-5-nitrophenyl]acetamidato(2-)]-, hydrogen (1:1)
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

5-Methyl-2,4-dihydro-pyrazol-3-one(108-26-9).msds
Hazard InformationBack 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.
Spectrum DetailBack Directory
[Spectrum Detail]

3-Methyl-2-pyrazolin-5-one(108-26-9)MS
3-Methyl-2-pyrazolin-5-one(108-26-9)1HNMR
3-Methyl-2-pyrazolin-5-one(108-26-9)13CNMR
3-Methyl-2-pyrazolin-5-one(108-26-9)IR1
3-Methyl-2-pyrazolin-5-one(108-26-9)IR2
3-Methyl-2-pyrazolin-5-one(108-26-9)Raman
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

3-Methyl-2-pyrazolin-5-one, 99%(108-26-9)
[Alfa Aesar]

3-Methyl-2-pyrazolin-5-one, 98+%(108-26-9)
[Sigma Aldrich]

108-26-9(sigmaaldrich)
[TCI AMERICA]

3-Methyl-5-pyrazolone,>98.0%(T)(108-26-9)
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