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ChemicalBook >> CAS DataBase List >> 3,4-DIMETHYL-4,5-DIHYDRO-1H-PYRAZOL-5-ONE

3,4-DIMETHYL-4,5-DIHYDRO-1H-PYRAZOL-5-ONE

3,4-DIMETHYL-4,5-DIHYDRO-1H-PYRAZOL-5-ONE price.
  • $40 - $4371
  • Product name: 3,4-DIMETHYL-4,5-DIHYDRO-1H-PYRAZOL-5-ONE
  • CAS: 6628-22-4
  • MF: C5H8N2O
  • MW: 112.13
  • EINECS:229-608-6
  • MDL Number:MFCD00085556
  • Synonyms:3,4-Dimethyl-2-pyrazolin-5-one;Einecs 229-608-6;2,4-Dihydro-4,5-dimethyl-3H-pyrazol-3-one;4,5-Dihydro-3,4-dimethyl-1H-pyrazol-5-one, 3,4-Dimethyl-2-pyrazolin-5-one;3,4-dimethyl-5-pyrazolone ;4,5-Dimethyl-1,2-dihydro-pyrazol-3-one;3,4-DIMETHYL-4,5-DIHYDRO-1H-PYRAZOL-5-ONE;3,4-DIMETHYLPYRAZOLIN-5-ONE
32 prices
Selected condition：
Brand
  • aablocks
  • ACHEMBLOCK
  • American Custom Chemicals Corporation
  • Apolloscientific
  • Atlantic Research Chemicals
  • Biosynth
  • ChemBridge Corporation
  • Chemenu
  • Medical Isotopes, Inc.
  • TRC
  • Usbiological
Package
  • 100mg
  • 250mg
  • 500mg
  • 1g
  • 1.25g
  • 2g
  • 2.5G
  • 5G
  • 10g
  • 25G
  • 200μmol
  • Manufactureraablocks
  • Product numberAA00FDIH
  • Product description4,5-Dimethyl-3H-Pyrazol-3-One 98%
  • Packaging100mg
  • Price$40
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA00FDIH
  • Product description4,5-Dimethyl-3H-Pyrazol-3-One 98%
  • Packaging250mg
  • Price$43
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA00FDIH
  • Product description4,5-Dimethyl-3H-Pyrazol-3-One 98%
  • Packaging1g
  • Price$51
  • Updated2026-05-28
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberX195350
  • Product description4,5-Dimethyl-3H-pyrazol-3-one 97.00%
  • Packaging5G
  • Price$250
  • Updated2026-05-27
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberX195350
  • Product description4,5-Dimethyl-3H-pyrazol-3-one 97.00%
  • Packaging25G
  • Price$1000
  • Updated2026-05-27
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0009965
  • Product description3,4-DIMETHYL-5-PYRAZOLONE 95.00%
  • Packaging2.5G
  • Price$1815
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberCHM0009965
  • Product description3,4-DIMETHYL-5-PYRAZOLONE 95.00%
  • Packaging250MG
  • Price$721.88
  • Updated2021-12-16
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR26970
  • Product description2,4-Dihydro-4,5-dimethyl-3H-pyrazol-3-one ≥95%
  • Packaging5g
  • Price$478
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR26970
  • Product description2,4-Dihydro-4,5-dimethyl-3H-pyrazol-3-one ≥95%
  • Packaging250mg
  • Price$94
  • Updated2026-06-04
  • Buy
  • ManufacturerApolloscientific
  • Product numberOR26970
  • Product description2,4-Dihydro-4,5-dimethyl-3H-pyrazol-3-one ≥95%
  • Packaging1g
  • Price$149
  • Updated2026-06-04
  • Buy
  • ManufacturerAtlantic Research Chemicals
  • Product numberXS009137
  • Product description4,5-Dimethyl-2,4-dihydro-3H-pyrazol-3-one 95
  • Packaging1g
  • Price$222.25
  • Updated2026-05-23
  • Buy
  • ManufacturerBiosynth
  • Product numberFD22307
  • Product description3,4-Dimethyl-5-pyrazolone
  • Packaging250mg
  • Price$285
  • Updated2021-12-16
  • Buy
  • ManufacturerBiosynth
  • Product numberFD22307
  • Product description3,4-Dimethyl-5-pyrazolone
  • Packaging100mg
  • Price$165
  • Updated2021-12-16
  • Buy
  • ManufacturerBiosynth
  • Product numberFD22307
  • Product description3,4-Dimethyl-5-pyrazolone
  • Packaging1g
  • Price$690
  • Updated2021-12-16
  • Buy
  • ManufacturerBiosynth
  • Product numberFD22307
  • Product description3,4-Dimethyl-5-pyrazolone
  • Packaging500mg
  • Price$425
  • Updated2021-12-16
  • Buy
  • ManufacturerBiosynth
  • Product numberFD22307
  • Product description3,4-Dimethyl-5-pyrazolone
  • Packaging2g
  • Price$1190
  • Updated2021-12-16
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA00FDIH 4,5-Dimethyl-3H-Pyrazol-3-One 98% 100mg $40 2026-05-28 Buy
aablocks AA00FDIH 4,5-Dimethyl-3H-Pyrazol-3-One 98% 250mg $43 2026-05-28 Buy
aablocks AA00FDIH 4,5-Dimethyl-3H-Pyrazol-3-One 98% 1g $51 2026-05-28 Buy
ACHEMBLOCK X195350 4,5-Dimethyl-3H-pyrazol-3-one 97.00% 5G $250 2026-05-27 Buy
ACHEMBLOCK X195350 4,5-Dimethyl-3H-pyrazol-3-one 97.00% 25G $1000 2026-05-27 Buy
American Custom Chemicals Corporation CHM0009965 3,4-DIMETHYL-5-PYRAZOLONE 95.00% 2.5G $1815 2021-12-16 Buy
American Custom Chemicals Corporation CHM0009965 3,4-DIMETHYL-5-PYRAZOLONE 95.00% 250MG $721.88 2021-12-16 Buy
Apolloscientific OR26970 2,4-Dihydro-4,5-dimethyl-3H-pyrazol-3-one ≥95% 5g $478 2026-06-04 Buy
Apolloscientific OR26970 2,4-Dihydro-4,5-dimethyl-3H-pyrazol-3-one ≥95% 250mg $94 2026-06-04 Buy
Apolloscientific OR26970 2,4-Dihydro-4,5-dimethyl-3H-pyrazol-3-one ≥95% 1g $149 2026-06-04 Buy
Atlantic Research Chemicals XS009137 4,5-Dimethyl-2,4-dihydro-3H-pyrazol-3-one 95 1g $222.25 2026-05-23 Buy
Biosynth FD22307 3,4-Dimethyl-5-pyrazolone 250mg $285 2021-12-16 Buy
Biosynth FD22307 3,4-Dimethyl-5-pyrazolone 100mg $165 2021-12-16 Buy
Biosynth FD22307 3,4-Dimethyl-5-pyrazolone 1g $690 2021-12-16 Buy
Biosynth FD22307 3,4-Dimethyl-5-pyrazolone 500mg $425 2021-12-16 Buy
Biosynth FD22307 3,4-Dimethyl-5-pyrazolone 2g $1190 2021-12-16 Buy

Properties

Melting point :269-2710C
Density :1.25
storage temp. :Refrigerator
solubility :DMSO, Methanol
form :Solid
color :Off-White

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
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 P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352 IF ON SKIN: wash with plenty of soap and water.
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.
P312 Call a POISON CENTER or doctor/physician if you feel unwell.
P332+P313 IF SKIN irritation occurs: Get medical advice/attention.
P337+P313 IF eye irritation persists: Get medical advice/attention.
P362 Take off contaminated clothing and wash before reuse.
P370+P378 In case of fire: Use … for extinction.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.
P405 Store locked up.
P501 Dispose of contents/container to..…

Description

3,4-Dimethyl-5-pyrazolone (cas# 6628-22-4) is a compound useful in organic synthesis.

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