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

Modify Date: 2025-08-20 08:19:50

3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one Structure
3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one structure
 Common Name 3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one
CAS Number 89-36-1 Molecular Weight 254.262
Density 1.5±0.1 g/cm3 Boiling Point 477ºC
Molecular Formula C10H10N2O4S Melting Point >252 °C (dec.)(lit.)
MSDS Chinese USA Flash Point N/A
Symbol GHS05
GHS05		 Signal Word Danger

 Names

Name 3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.5±0.1 g/cm3
Boiling Point 477ºC
Melting Point >252 °C (dec.)(lit.)
Molecular Formula C10H10N2O4S
Molecular Weight 254.262
Exact Mass 254.036133
PSA 95.42000
LogP -1.31
Index of Refraction 1.667
InChIKey CWJQQASJVVAXKL-UHFFFAOYSA-N
SMILES CC1=NN(c2ccc(S(=O)(=O)O)cc2)C(=O)C1
Water Solubility 5 g/L (20 ºC)

 Safety Information

Symbol GHS05
GHS05
Signal Word Danger
Hazard Statements H314
Precautionary Statements P280-P305 + P351 + P338-P310
Personal Protective Equipment Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
Hazard Codes C:Corrosive;
Risk Phrases R34
Safety Phrases S26-S36/37/39-S45
RIDADR UN 1759 8/PG 2
WGK Germany 1
Hazard Class 8.0
HS Code 2933199090

 Customs

HS Code 2933199090
Summary 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Articles2

More Articles
Determination of galactose and mannose residues in natural galactomannans using a fast and efficient high-performance liquid chromatography/UV detection.

J. Chromatogr. A. 1181(1-2) , 45-50, (2008)

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 galactom...

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)

 Synonyms

4-(3-methyl-5-oxo-4,5-dihydropyrazol-1-yl)benzenesulfonic acid
4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-benzenesulfonic acid
4-(3-Methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid
PSMP
MFCD00020756
SPMP
1-(4-sulfophenyl)-3-methyl-2-pyrazoline-5-one
1-(p-Sulfophenyl)-3-methyl-pyrazolon-(5)
1-(4-Sulfophenyl)-3-methyl-5-p
4-PYRAZOLIC ACID
4-acid pyrazolone
Benzenesulfonic acid, 4-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-
EINECS 201-901-3
PYRAZOLINE G
4-(3-Methyl-5-oxo-2-pyrazolin-1-yl)benzolsulfonsaeure
1-(4-Sulphophenyl)-3-methyl-5-pyrazolone
PHENYLMETHYLPYRAZOLE-4-ACID
4-(3-methyl-5-oxo-2,5-dihydro-pyrazol-1-yl)-benzenesulfonic acid
p-SMP (1 : 4 SPMP)
PYRAZOLONE G
Pyrazolic acid
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Chemsrc provides CAS#:89-36-1 MSDS, density, melting point, boiling point, structure, etc. Its name is 3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one>> amp version: 3-Methyl-1-(4-sulfophenyl)-2-pyrazolin-5-one

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