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Merck
CN

556890

Sigma-Aldrich

1-(3-Sulfophenyl)-3-methyl-2-pyrazolin-5-one

95%

Synonym(s):

1-(3-Sulfophenyl)-3-methyl-5-pyrazolone, 3-(4,5-Dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonic acid

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About This Item

Empirical Formula (Hill Notation):
C10H10N2O4S
CAS Number:
Molecular Weight:
254.26
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
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Assay

95%

mp

335 °C (lit.)

SMILES string

CC1=NN(C(=O)C1)c2cccc(c2)S(O)(=O)=O

InChI

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

InChI key

VEMGKBUHUTYHHA-UHFFFAOYSA-N

Application

1-(3-Sulfophenyl)-3-methyl-5-pyrazolone [1-(3′-sulfophenyl)-3-methyl-5-pyrazolone] may be used to synthesize α-Pigment Yellow 191.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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The first crystal structures of industrial laked yellow pigments determined by X-ray powder diffraction.
Martin U Schmidt et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 15(2), 338-341 (2008-12-02)

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