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

CAS No.：89-36-1

Other grades of this product :

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

Uses

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

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)

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 Information

Provider	Language
3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one	English
SigmaAldrich	English
ACROS	English

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.

3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one Preparation Products And Raw materials

Preparation Products

ACID ORANGE 63-->DIRECT ORANGE 1-->AZOSOL FAST ORANGE RA-->MORDANT BROWN 15-->trihydrogen bis[4-[4,5-dihydro-4-[(2-hydroxy-5-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonato(3-)]chromate(3-)-->Reactive yellow 16-->C.I. Direct Orange 31-->ACID YELLOW 11-->Reactive Yellow 17-->sodium p-[4,5-dihydro-4-[(2-hydroxy-5-methyl-3-nitrophenyl)azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate-->Reactive Yellow 15-->disodium p-[4,5-dihydro-4-[[2-methoxy-5-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]azo]-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulphonate-->disodium [2-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]benzoato(2-)][2-[[4,5-dihydro-3-methyl-5-oxo-1-(4-sulphophenyl)-1H-pyrazol-4-yl]azo]benzoato(3-)]chromate(2-)-->Acid Brown 98-->disodium (3Z)-5-methyl-3-[[2-methyl-4-[3-methyl-4-[[3-methyl-5-oxo-1-(4-sulfonatophenyl)-4H-pyrazol-4-yl]diazenyl]phenyl]phenyl]hydrazinylidene]-6-oxo-cyclohexa-1,4-diene-1-carboxylate-->ACID YELLOW 76-->Mordant Orange 3-->4-[4,5-Dihydro-3-methyl-4-[(4-methylphenyl)azo]-5-oxo-1H-pyrazol-1-yl]benzenesulfonic acid sodium salt-->ACID YELLOW 25-->Mordant Yellow 8

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