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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/REAXYS Number:
619424
EC Number:
201-901-3
MDL number:
MFCD00020756
UNSPSC Code:
12352100
PubChem Substance ID:
24848135
NACRES:
NA.22

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

signalword

Danger

hcodes

H314

Hazard Classifications

Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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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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