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  6. 3-Methyl-2-pyrazolin-5-one, 98+%, Thermo Scientific Chemicals

3-Methyl-2-pyrazolin-5-one, 98+%, Thermo Scientific Chemicals

Catalog Number AAA1025330
Click to view available options
Quantity:
10 g
50 g
250 g
108-26-9
C4H6N2O
98.105
MFCD00020699
NHLAPJMCARJFOG-UHFFFAOYSA-N
3-methyl-2-pyrazolin-5-one, 3-methyl-5-pyrazolone, 3-methyl-1h-pyrazol-5 4h-one, 3h-pyrazol-3-one, 2,4-dihydro-5-methyl, 3-methyl-pyrazolon-5, 2-pyrazolin-5-one, 3-methyl, 3-methyl-4,5-dihydro-1h-pyrazol-5-one, 5-methyl-2,4-dihydro-3h-pyrazol-3-one, 2,4-dihydro-5-methyl-3h-pyrazol-3-one, 3-methyl-pyrazolon-5 german
7920
3-methyl-1,4-dihydropyrazol-5-one
CC1=NNC(=O)C1
108-26-9
C4H6N2O
98.105
MFCD00020699
NHLAPJMCARJFOG-UHFFFAOYSA-N
3-methyl-2-pyrazolin-5-one, 3-methyl-5-pyrazolone, 3-methyl-1h-pyrazol-5 4h-one, 3h-pyrazol-3-one, 2,4-dihydro-5-methyl, 3-methyl-pyrazolon-5, 2-pyrazolin-5-one, 3-methyl, 3-methyl-4,5-dihydro-1h-pyrazol-5-one, 5-methyl-2,4-dihydro-3h-pyrazol-3-one, 2,4-dihydro-5-methyl-3h-pyrazol-3-one, 3-methyl-pyrazolon-5 german
7920
3-methyl-1,4-dihydropyrazol-5-one
CC1=NNC(=O)C1

Description

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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
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.

Solubility
Slightly soluble in ethanol.

Notes
Incompatible with oxidizing agents.
TRUSTED_SUSTAINABILITY
Melting Point 220°C to 224°C
Quantity 250 g
Solubility Information Slightly soluble in ethanol.
Formula Weight 98.11
Percent Purity ≥98%
Chemical Name or Material 3-Methyl-2-pyrazolin-5-one

Safety and Handling

Hazard Category Warning
Hazard Statement GHS H Statement
H315-H319-H335
Causes skin irritation.
Causes serious eye irritation.
May cause respiratory irritation.
Precautionary Statement GHS P Statement
P261-P280-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapors/spray.
Wear protective gloves/protective clothing/eye protection/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
Continue rinsing.
IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing.
Store locked up.
Dispose of contents/container in accordance with local/regional/national/international regulations.
EINECSNumber 203-565-3
RTECSNumber UQ9451500
TSCA Yes
Recommended Storage Ambient temperatures
SDS

RUO – Research Use Only

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