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
• 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

Properties

• mp: >252 °C (dec.) (lit.)
• functional group: sulfonic acid
• 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

Description

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.

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H314
• Precautionary Statements: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• 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