5-Methyl-3(2H)-pyridazinone

Basic Information

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CAS Number

54709-94-3

Molecular Formula

C5H6N2O

Molecular Weight

110.12 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

Fine Chemicals Dyes and Pigments Organic Dyes

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Melting Point

139-142°C

SMILES

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CC1=CC(=O)NN=C1

InChI

InChI=1S/C5H6N2O/c1-4-2-5(8)7-6-3-4/h2-3H,1H3,(H,7,8)

InChIKey

MMDFKVYPOQFQHP-UHFFFAOYSA-N

LogP

0.4906199999999999

Topological Polar Surface Area

46.010000000000005 Å²

Hydrogen Bond Donor/Acceptor

1 / 3

Complexity

169

Safety Information

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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

EN300-97401
5-Methyl-2H-pyridazin-3-one
5-Methylpyridazin-3(2H)-one
TS-01541
FT-0685910
SCHEMBL1150386
5-Methylpyrazinone
3-Hydroxy-5-methylpyridazine
A7951
4-methyl-1H-pyridazin-6-one
3(2H)-Pyridazinone, 5-methyl-
5-Methyl-3(2H)-pyridazinone
AM20100351
54709-94-3
s10201
3-Hydroxy-5-methyl-pyridazine
NSC300284
NSC-300284
AC-24525
Z1198278270
W-203067
5-methylpyridazin-3-ol
MFCD09743644
AKOS006305100
CS-W000548
DTXSID70316165
5-methyl-2,3-dihydropyridazin-3-one
SY031246
UW6
BCP22425
AKOS015842408

MDL Number

MFCD09743644

Customs Code

2933990090

FAQ

What are the physical and chemical properties of 5-Methyl-3(2H)-pyridazinone (CAS: 54709-94-3)?

5-Methyl-3(2H)-pyridazinone (CAS: 54709-94-3) is a crystalline solid with a molecular weight of approximately 121.12 g/mol. It has a low solubility in water but is more soluble in organic solvents like ethanol and acetone. The compound exhibits good stability under neutral and slightly acidic conditions but is susceptible to hydrolysis in strongly acidic or basic media. It is not highly reactive under normal laboratory conditions.

How is 5-Methyl-3(2H)-pyridazinone (CAS: 54709-94-3) typically synthesized?

5-Methyl-3(2H)-pyridazinone can be synthesized through the reaction of methyl isonicotinate with sodium hydroxide to form 5-methylpicolinic acid, which is then heated to form the pyridazinone. Alternatively, it can be prepared by the condensation of 2-methylisonicotinic acid with hydrazine hydrate. The reaction is typically performed under mild conditions to ensure high yield and selectivity.

What industries use 5-Methyl-3(2H)-pyridazinone (CAS: 54709-94-3)?

5-Methyl-3(2H)-pyridazinone (CAS: 54709-94-3) is used in the pharmaceutical industry for the synthesis of certain drug intermediates. It also finds applications in the sensor industry due to its specific chemical reactivity and in the semiconductor industry for its use in certain photoresists and patterning processes.

What precautions should be taken when handling 5-Methyl-3(2H)-pyridazinone (CAS: 54709-94-3)?

When handling 5-Methyl-3(2H)-pyridazinone (CAS: 54709-94-3), it is essential to use appropriate personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat. Work should be conducted in a well-ventilated area or under a fume hood. Spills should be contained and cleaned up using appropriate absorbent materials. For detailed safety information, refer to the Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS).