Basic information Uses Safety Supplier Related

3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one

Basic information Uses Safety Supplier Related

3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one Basic information

Product Name:
3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one
Synonyms:
  • 3-METHYL-1-(P-SULFOPHENYL)-2-PYRAZOLIN-5-ONE 98%
  • 3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one, 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid
  • 1-(4-SULFOPHENYL)-3-METHYL-5-PYRAZOLONE
  • 1-(4-SULPHOPHENYL)-3-METHYL-5-PYRAZOLONE
  • 3-Methyl-1-(4-sulfonphenyl)-5-pyrazolone
  • 1-(P-SULFOPHENYL)-3-METHYL-5-PYRAZOLONE
  • 1-(4-Sulfonphenyl)-3-methyl-5-pyrazolone
  • 3-METHYL-1-(P-SULFOPHENYL)-2-PYRAZOLIN-5-ONE
CAS:
89-36-1
MF:
C10H10N2O4S
MW:
254.26
EINECS:
201-901-3
Product Categories:
  • Intermediates of Dyes and Pigments
  • Building Blocks
  • C10
  • Chemical Synthesis
  • Heterocyclic Building Blocks
  • Pyrazoles
  • Heterocyclic Compounds
Mol File:
89-36-1.mol
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3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one Chemical Properties

Melting point:
>252 °C (dec.) (lit.)
Density 
1.4456 (rough estimate)
vapor pressure 
0.001Pa at 20℃
refractive index 
1.5650 (estimate)
storage temp. 
Sealed in dry,Room Temperature
form 
Powder
pka
pKa 4.90 (H2O t = 37 I = 0.15) (Uncertain)
color 
White to Orange to Green
Water Solubility 
5 g/L (20 ºC)
BRN 
619424
InChIKey
CWJQQASJVVAXKL-UHFFFAOYSA-N
LogP
-2.04 at 23℃ and pH7
CAS DataBase Reference
89-36-1(CAS DataBase Reference)
EPA Substance Registry System
Benzenesulfonic acid, 4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)- (89-36-1)
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Safety Information

Hazard Codes 
C
Risk Statements 
34
Safety Statements 
26-36/37/39-45
RIDADR 
UN 1759 8/PG 2
WGK Germany 
1
HazardClass 
8
PackingGroup 
II
HS Code 
29331990

MSDS

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3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one Usage And Synthesis

Uses

3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one acts as a reagent for the identification of sulfonic acids as efficient ecto-5'-nucleotidase inhibitors. Ecto-5'-nucleotidase inhibition is thought to provide an attractive approach to cancer therapy.

Chemical Properties

BEIGE POWDER

Uses

1-(4-Sulfophenyl)-3-methyl-5-pyrazolone (4-(3-methyl-5-oxo-2-pyrazolin-1-yl) benzoic acid) was used for pre-column derivatization of carbohydrates. It was also used as derivatization reagent in determination of oligosides, mannose and galactose obtained by degradation of galactomannans.

Definition

ChEBI: 4-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid is an organosulfur compound and a sulfonic acid derivative.

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