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ChemicalBook >> CAS DataBase List >> 3-Methyl-2-pyrazolin-5-one

3-Methyl-2-pyrazolin-5-one

3-Methyl-2-pyrazolin-5-one price.
  • $5 - $472.5
  • Product name: 3-Methyl-2-pyrazolin-5-one
  • CAS: 108-26-9
  • MF: C4H6N2O
  • MW: 98.1
  • EINECS:203-565-3
  • MDL Number:MFCD00020699
  • Synonyms:3-Methyl-4,5-dihydro-1H-pyrazole-5-one;5-Methyl-2,4-dihydro-3H-pyrazole-3-one;3-Methyl-2-pyrazolin-5-one,99%;3-methyl pyrazole-5-one;3-Methyl-5-pyrazolone, 99%, 99%;TIMTEC-BB SBB004372;2-Pyrazolin-5-one, 3-methyl-;3-methyl-2-pyrazolin-5-on
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  • AK Scientific
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Package
  • 5g
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  • 1kg
  • ManufacturerAHH
  • Product numberMT-18765
  • Product description3-Methyl-2-pyrazolin-5-one 98%
  • Packaging250g
  • Price$300
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ53375
  • Product description3-Methyl-2-pyrazolin-5-one
  • Packaging500g
  • Price$150
  • Updated2021-12-16
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  • ManufacturerAK Scientific
  • Product numberC188
  • Product description3-Methyl-2-pyrazolin-5-one
  • Packaging5g
  • Price$14
  • Updated2021-12-16
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  • ManufacturerAlfa Aesar
  • Product numberA10253
  • Product description3-Methyl-2-pyrazolin-5-one, 98+%
  • Packaging10g
  • Price$38.54
  • Updated2023-01-06
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  • ManufacturerAlfa Aesar
  • Product numberA10253
  • Product description3-Methyl-2-pyrazolin-5-one, 98+%
  • Packaging50g
  • Price$137.55
  • Updated2023-01-06
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  • ManufacturerAlfa Aesar
  • Product numberA10253
  • Product description3-Methyl-2-pyrazolin-5-one, 98+%
  • Packaging250g
  • Price$472.5
  • Updated2023-01-06
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  • ManufacturerAmbeed
  • Product numberA247389
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging25g
  • Price$6
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA247389
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging10g
  • Price$6
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA247389
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging100g
  • Price$9
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA247389
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging500g
  • Price$72
  • Updated2021-12-16
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  • ManufacturerAmbeed
  • Product numberA247389
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging1kg
  • Price$140
  • Updated2021-12-16
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  • ManufacturerApolloscientific
  • Product numberOR28352
  • Product description3-methyl-4,5-dihydro-1H-pyrazol-5-one
  • Packaging100g
  • Price$65
  • Updated2021-12-16
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  • ManufacturerArk Pharm
  • Product numberP000723772
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging10g
  • Price$5
  • Updated2021-12-16
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  • ManufacturerArk Pharm
  • Product numberP000723772
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging25g
  • Price$8
  • Updated2021-12-16
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  • ManufacturerArk Pharm
  • Product numberP000723772
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging100g
  • Price$13
  • Updated2021-12-16
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  • ManufacturerArk Pharm
  • Product numberP000723772
  • Product description3-Methyl-1H-pyrazol-5(4H)-one 97%
  • Packaging500g
  • Price$61
  • Updated2021-12-16
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
AHH MT-18765 3-Methyl-2-pyrazolin-5-one 98% 250g $300 2021-12-16 Buy
AK Scientific J53375 3-Methyl-2-pyrazolin-5-one 500g $150 2021-12-16 Buy
AK Scientific C188 3-Methyl-2-pyrazolin-5-one 5g $14 2021-12-16 Buy
Alfa Aesar A10253 3-Methyl-2-pyrazolin-5-one, 98+% 10g $38.54 2023-01-06 Buy
Alfa Aesar A10253 3-Methyl-2-pyrazolin-5-one, 98+% 50g $137.55 2023-01-06 Buy
Alfa Aesar A10253 3-Methyl-2-pyrazolin-5-one, 98+% 250g $472.5 2023-01-06 Buy
Ambeed A247389 3-Methyl-1H-pyrazol-5(4H)-one 97% 25g $6 2021-12-16 Buy
Ambeed A247389 3-Methyl-1H-pyrazol-5(4H)-one 97% 10g $6 2021-12-16 Buy
Ambeed A247389 3-Methyl-1H-pyrazol-5(4H)-one 97% 100g $9 2021-12-16 Buy
Ambeed A247389 3-Methyl-1H-pyrazol-5(4H)-one 97% 500g $72 2021-12-16 Buy
Ambeed A247389 3-Methyl-1H-pyrazol-5(4H)-one 97% 1kg $140 2021-12-16 Buy
Apolloscientific OR28352 3-methyl-4,5-dihydro-1H-pyrazol-5-one 100g $65 2021-12-16 Buy
Ark Pharm P000723772 3-Methyl-1H-pyrazol-5(4H)-one 97% 10g $5 2021-12-16 Buy
Ark Pharm P000723772 3-Methyl-1H-pyrazol-5(4H)-one 97% 25g $8 2021-12-16 Buy
Ark Pharm P000723772 3-Methyl-1H-pyrazol-5(4H)-one 97% 100g $13 2021-12-16 Buy
Ark Pharm P000723772 3-Methyl-1H-pyrazol-5(4H)-one 97% 500g $61 2021-12-16 Buy

Properties

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)
form :powder to crystal
color :White to Light yellow
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 :3H-Pyrazol-3-one, 2,4-dihydro-5-methyl- (108-26-9)

Safety Information

Symbol(GHS): GHS hazard pictograms
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning GHS hazard pictograms
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

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.

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