3-Methyl-1H-pyrazol-5(4H)-one

Basic Information

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CAS Number

108-26-9

Molecular Formula

C4H6N2O

Molecular Weight

98.1 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Heterocyclic Compounds

Pharmaceutical Chemicals Pharmaceutical Intermediates Heterocyclic Intermediates

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Melting Point

220.0 to 224.0 deg-C

Boiling Point

183.6°C (rough estimate)

Flash Point

141.1℃

Solubility

Slightly soluble in ethanol.

Refractive Index

1.4327 (estimate)

SMILES

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CC1=NNC(=O)C1

InChI

InChI=1S/C4H6N2O/c1-3-2-4(7)6-5-3/h2H2,1H3,(H,6,7)

InChIKey

NHLAPJMCARJFOG-UHFFFAOYSA-N

LogP

-0.35340

Complexity

128

Safety Information

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GHS Hazard Pictograms

H315

H319

H335

Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Synonyms & References

English

5-methyl-2,4-dihydropyrazol-3-one
BRN 0606503
E83006
3Me5Oxopyrazol
EINECS 203-565-3
5-Methyl-2,4-dihydro-3H-pyrazol-3-one #
3-Methyl-pyrazolon-(5)
5-Methyl-2,4-dihydro-pyrazol-3-one
3-methyl-2-pyrazoline-5-one
AC-4810
SY010796
Q27286078
3-methyl-4,5-dihydro-1H-pyrazol-5-one
W-108724
AC8022
5-Methyl-2,4-dihydro-3H-pyrazol-3-one
CS-W013724
3-Methyl-1H-pyrazol-5(4H)-one
3-Methyl-5-pyrazolone
2-PYRAZOLIN-5-ONE, 3-METHYL-
M0491
3-Methyl-5-pyrazolone, Lonza quality, 99.0-100.3% (w/w) (T)
EC 203-565-3
AKOS025243276
DTXSID2051554
3-Methyl-2-pyrazolin-5-one
AKOS003624833
3-Methyl-pyrazolon-(5) [German]
FT-0616077
UNII-P378M0497D
3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-

MDL Number

MFCD00020699

Customs Code

2933199090

FAQ

What is 3-Methyl-1H-pyrazol-5(4H)-one (CAS: 108-26-9)?

3-Methyl-1H-pyrazol-5(4H)-one (CAS: 108-26-9) is an organic compound with the molecular formula C5H5NO. It is a heterocyclic compound containing a pyrazole ring with a methyl substitution. This compound is used in various applications including pharmaceuticals, as a precursor in chemical synthesis, and in research settings.

What are the main uses of 3-Methyl-1H-pyrazol-5(4H)-one (CAS: 108-26-9)?

3-Methyl-1H-pyrazol-5(4H)-one (CAS: 108-26-9) is primarily used as an intermediate in the synthesis of other chemical compounds, particularly in the pharmaceutical industry. It has applications in research as a chemical reagent and is also utilized in the production of certain dyes and pigments.

Is 3-Methyl-1H-pyrazol-5(4H)-one (CAS: 108-26-9) safe?

3-Methyl-1H-pyrazol-5(4H)-one (CAS: 108-26-9) is generally considered safe when handled with appropriate precautions. However, it is important to follow safety guidelines, such as wearing protective gloves and goggles, to prevent skin and eye contact. It should be stored in a cool, dry place away from direct sunlight and heat sources.

How should 3-Methyl-1H-pyrazol-5(4H)-one (CAS: 108-26-9) be stored?

3-Methyl-1H-pyrazol-5(4H)-one (CAS: 108-26-9) should be stored in a cool, dry place, away from direct sunlight and heat sources. It should be kept in a tightly sealed container to prevent moisture and air exposure. Proper ventilation should be ensured during handling to minimize inhalation risks.