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Merck
CN

134163

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

Key Documents

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Quality Level

100

InChI key

CWJQQASJVVAXKL-UHFFFAOYSA-N

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)

SMILES string

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

mp

>252 °C (dec.) (lit.)

functional group

sulfonic acid

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Related Categories

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

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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Certificates of Analysis (COA)

Lot/Batch Number
02623AJ
18719HO

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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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