3-Methyl-2-Pyrazolin-5-One

English 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-metChemicalbookhylpyrazole-5-one;

3-Methyl-5-pyrazolone,99%,99%;TIMTEC-BBSBB004372;2-Pyrazolin-5-one,3-methyl-;

CAS number

108-26-9

Molecular formula

C4H6N20

Molecular weight

98.1

EINECS number

203-565-3

Melting point

220-224℃

Boiling point

183.6℃(rough estimate)

Density

1.1890(rough estimate)

Refractive index

1.4327(estimate)

Storage conditions

Sealed in dry,Room Temperature

Solubility

Slightly soluble in ethanol.

Acidity coefficient (pKa)

13.10±0.40 (Predicted)

Form

Powder crystals

Color

White to light yellow to light orange

CAS database

108-26-9(CAS DataBase Reference)

NIST chemical information

3H-pyrazol-3-one,2,4-dihydro-5-methyl-(108-26-9)

EPA chemical information

3H-Pyrazol-3-one,2,4-dihydro-5-methyl-(108-26-9)

Chemical Properties

3-Methyl-2-pyrazol-5-one is a white to light yellow powder, which can undergo reduction reaction, aldol condensation reaction, etc. under certain conditions.

Uses

3-Methyl-2-pyrazol-5-one is a pyrazole derivative, used in pharmaceutical synthesis and experimental research.

Hazard category code

36/37/38

Safety instructions

24/25

WGK Germany

3

RTECS number

UQ9451500

TSCA

Yes

Customs code

29331990

Toxicity

rat,LDLo,unreported,600mg/kg(600mg/kg),Biochemical Pharmacology.Vol.14,Pg.1325,1965.

Upstream raw materials

1-acetyl-2-phenylhydrazine, ethyl acetoacetate

Downstream products

Acid yellow G, active yellow K-6G, active yellow M-5G, weak acid yellow 2G, acid yellow 127,
 active yellow KE-3G,neutral red 2gl, active yellow 18, neutral red BL, acid yellow 117,
active yellow 1, 2-(4-chlorobenzylidene)malononitrile,2-butynoic acid methyl ester, 1,2-diisonicotinylhydrazine