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Sigma-Aldrich

1-(4-Sulfophenyl)-3-methyl-5-pyrazolone

Synonym(s):

3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one, 4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid

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About This Item

Empirical Formula (Hill Notation):
C10H10N2O4S
CAS Number:
89-36-1
Molecular Weight:
254.26
Beilstein:
619424
EC Number:
201-901-3
MDL number:
MFCD00020756
UNSPSC Code:
12352100
PubChem Substance ID:
24848135
NACRES:
NA.22

Quality Level

100

mp

>252 °C (dec.) (lit.)

SMILES string

CC1=NN(C(=O)C1)c2ccc(cc2)S(O)(=O)=O

InChI

1S/C10H10N2O4S/c1-7-6-10(13)12(11-7)8-2-4-9(5-3-8)17(14,15)16/h2-5H,6H2,1H3,(H,14,15,16)

InChI key

CWJQQASJVVAXKL-UHFFFAOYSA-N

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Application

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.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Precolumn derivatization of reducing carbohydrates with 4-(3-methyl-5-oxo-2-pyrazolin-1-yl) benzoic acid. Study of reaction, high-performance liquid chromatographic separation and quantitative performance of method.
Castells CB, et al.
Chromatographia, 56(3-4), 153-160 (2002)
N Tapie et al.
Journal of chromatography. A, 1181(1-2), 45-50 (2008-01-08)
The present work describes the validation of an easy, fast and efficient precolumn derivatization method for the quantification of oligosides, mannose and galactose obtained by degradation of galactomannans. This work combines an acid hydrolysis and an enzymatic degradation of natural

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