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ChemicalBook >> CAS DataBase List >> 2,4-Dihydro-5-methyl-2-(4-methylphenyl)-3H-pyrazol-3-one

2,4-Dihydro-5-methyl-2-(4-methylphenyl)-3H-pyrazol-3-one

2,4-Dihydro-5-methyl-2-(4-methylphenyl)-3H-pyrazol-3-one price.
  • $10 - $1588.7
  • Product name: 2,4-Dihydro-5-methyl-2-(4-methylphenyl)-3H-pyrazol-3-one
  • CAS: 86-92-0
  • MF: C11H12N2O
  • MW: 188.23
  • EINECS:201-708-4
  • MDL Number:MFCD00035708
  • Synonyms:TIMTEC-BB SBB003677;1-(4'-METHYL-PHENYL)-3-METHYL-5-PYRAZOLONE;2,4-DIHYDRO-5-METHYL-2-(4-METHYLPHENYL)-3H-PYRAZOL-3-ONE;1-(P-TOLYL)-3-METHYL-5-PYRAZOLONE;1-TOLYL-3-METHYL-5-PYRAZOLONE;3-methyl-1-p-tolyl-pyrazolin-5-one ;3-METHYL-1-(4-METHYLPHENYL)-4,5-DIHYDRO-1H-PYRAZOL-5-ONE;3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one
Price32 Properties Safety Information Description
32 prices
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Brand
  • aablocks
  • Acrotein
  • AHH
  • AK Scientific
  • American Custom Chemicals Corporation
  • Apolloscientific
  • Aronis compounds
  • Chemenu
  • Chem-Impex
  • Crysdot
  • Medical Isotopes, Inc.
  • TCI Chemical
  • TRC
Package
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  • Manufactureraablocks
  • Product numberAA003FQ4
  • Product description3-Methyl-1-p-tolyl-5-pyrazolone ≥99%(Assay)
  • Packaging1kg
  • Price$100
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003FQ4
  • Product description3-Methyl-1-p-tolyl-5-pyrazolone ≥99%(Assay)
  • Packaging5kg
  • Price$370
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003FQ4
  • Product description3-Methyl-1-p-tolyl-5-pyrazolone 97%
  • Packaging100g
  • Price$17
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003FQ4
  • Product description3-Methyl-1-p-tolyl-5-pyrazolone ≥97%
  • Packaging25g
  • Price$11
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA003FQ4
  • Product description3-Methyl-1-p-tolyl-5-pyrazolone ≥97%
  • Packaging5g
  • Price$10
  • Updated2026-05-28
  • Buy
  • ManufacturerAcrotein
  • Product numberH-0494
  • Product description3-Methyl-1-(4-methylphenyl)-5-pyrazolone 97%
  • Packaging1kg
  • Price$275
  • Updated2021-12-16
  • Buy
  • ManufacturerAcrotein
  • Product numberH-0494
  • Product description3-Methyl-1-(4-methylphenyl)-5-pyrazolone 97%
  • Packaging250g
  • Price$100.84
  • Updated2026-05-25
  • Buy
  • ManufacturerAcrotein
  • Product numberH-0494
  • Product description3-Methyl-1-(4-methylphenyl)-5-pyrazolone 97%
  • Packaging25g
  • Price$19.99
  • Updated2026-05-25
  • Buy
  • ManufacturerAcrotein
  • Product numberH-0494
  • Product description3-Methyl-1-(4-methylphenyl)-5-pyrazolone 97%
  • Packaging100g
  • Price$54.64
  • Updated2026-05-25
  • Buy
  • ManufacturerAHH
  • Product numberMT-43110
  • Product description4-Tolylmethylpyrazolone 97%
  • Packaging250g
  • Price$450
  • Updated2026-05-26
  • Buy
  • ManufacturerAK Scientific
  • Product numberR637
  • Product description3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one
  • Packaging1g
  • Price$64
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0016988
  • Product description3-METHYL-1-P-TOLYL-5-PYRAZOLONE 95.00%
  • Packaging1G
  • Price$945.95
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0016988
  • Product description3-METHYL-1-P-TOLYL-5-PYRAZOLONE 95.00%
  • Packaging5G
  • Price$1588.7
  • Updated2021-12-16
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR28710
  • Product description3-methyl-1-(4-methylphenyl)-4,5-dihydro-1H-pyrazol-5-one 98%
  • Packaging500g
  • Price$55
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR28710
  • Product description3-methyl-1-(4-methylphenyl)-4,5-dihydro-1H-pyrazol-5-one 98%
  • Packaging25g
  • Price$37
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR28710
  • Product description3-methyl-1-(4-methylphenyl)-4,5-dihydro-1H-pyrazol-5-one 98%
  • Packaging100g
  • Price$41
  • Updated2026-06-04
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA003FQ4 3-Methyl-1-p-tolyl-5-pyrazolone ≥99%(Assay) 1kg $100 2026-05-28 Buy
aablocks AA003FQ4 3-Methyl-1-p-tolyl-5-pyrazolone ≥99%(Assay) 5kg $370 2026-05-28 Buy
aablocks AA003FQ4 3-Methyl-1-p-tolyl-5-pyrazolone 97% 100g $17 2026-05-28 Buy
aablocks AA003FQ4 3-Methyl-1-p-tolyl-5-pyrazolone ≥97% 25g $11 2026-05-28 Buy
aablocks AA003FQ4 3-Methyl-1-p-tolyl-5-pyrazolone ≥97% 5g $10 2026-05-28 Buy
Acrotein H-0494 3-Methyl-1-(4-methylphenyl)-5-pyrazolone 97% 1kg $275 2021-12-16 Buy
Acrotein H-0494 3-Methyl-1-(4-methylphenyl)-5-pyrazolone 97% 250g $100.84 2026-05-25 Buy
Acrotein H-0494 3-Methyl-1-(4-methylphenyl)-5-pyrazolone 97% 25g $19.99 2026-05-25 Buy
Acrotein H-0494 3-Methyl-1-(4-methylphenyl)-5-pyrazolone 97% 100g $54.64 2026-05-25 Buy
AHH MT-43110 4-Tolylmethylpyrazolone 97% 250g $450 2026-05-26 Buy
AK Scientific R637 3-Methyl-1-(p-tolyl)-2-pyrazolin-5-one 1g $64 2021-12-16 Buy
American Custom Chemicals Corporation CHM0016988 3-METHYL-1-P-TOLYL-5-PYRAZOLONE 95.00% 1G $945.95 2021-12-16 Buy
American Custom Chemicals Corporation CHM0016988 3-METHYL-1-P-TOLYL-5-PYRAZOLONE 95.00% 5G $1588.7 2021-12-16 Buy
Apolloscientific OR28710 3-methyl-1-(4-methylphenyl)-4,5-dihydro-1H-pyrazol-5-one 98% 500g $55 2026-06-04 Buy
Apolloscientific OR28710 3-methyl-1-(4-methylphenyl)-4,5-dihydro-1H-pyrazol-5-one 98% 25g $37 2026-06-04 Buy
Apolloscientific OR28710 3-methyl-1-(4-methylphenyl)-4,5-dihydro-1H-pyrazol-5-one 98% 100g $41 2026-06-04 Buy
Next Last

Properties

Melting point :129 °C
Boiling point :323.23°C (rough estimate)
Density :1.1124 (rough estimate)
vapor pressure :0.002-0.002Pa at 25℃
refractive index :1.5850 (estimate)
storage temp. :2-8°C
solubility :Chloroform (Slightly), Methanol (Slightly)
form :Solid
pka :2.73±0.50(Predicted)
color :Beige
LogP :1.77 at 23℃ and pH6.9-7.1
CAS DataBase Reference :86-92-0(CAS DataBase Reference)
EPA Substance Registry System :3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-2-(4-methylphenyl)- (86-92-0)

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P272 Contaminated work clothing should not be allowed out of the workplace.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
P321 Specific treatment (see … on this label).
P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention.
P363 Wash contaminated clothing before reuse.
P501 Dispose of contents/container to..…

Description

2,4-Dihydro-5-methyl-2-(4-methylphenyl)-3H-Pyrazol-3-one is used as an antioxidant. Edaravone (E335000) derivative.

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Suppliers and manufacturers

J & K SCIENTIFIC LTD. TCI (Shanghai) Development Co., Ltd. Energy Chemical JinYan Chemicals(ShangHai) Co.,Ltd. Adamas Reagent, Ltd. Shanghai Longsheng chemical Co.,Ltd. Chemsky（shanghai）International Co.,Ltd. XiaoGan ShenYuan ChemPharm co,ltd Syntechem Co.,Ltd Tianjin heowns Biochemical Technology Co., Ltd.