C10H8N2O6S
284.25 g/mol
Dye & PigmentWarning
Pyrazolone T
CAS118-47-8EC204-254-5
Category
Dye & Pigment
Compound Class
Heterocycle
Primary Use
pyrazolone dye intermediate
Pyrazolone T is an organic compound used as an intermediate in the production of pyrazolone-based dyes. It features a sulfonic acid group and a carboxylic acid group, contributing to its solubility and reactivity in dye synthesis.
pyrazolone dye intermediate
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
5-amino-2-methylbenzenesulfonic acid
CAS118-88-7
dye intermediate for food coloring
ReferenceSame Category
3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid
CAS119-17-5
Dye and pigment intermediate
ReferenceSame Category
7-Anilino-1-naphthol-3-sulfonic acid
CAS119-19-7
dye intermediate
ReferenceSame Category
1,7-cleve'S acid
CAS119-28-8
Azo dye intermediate
Referencesame scaffold
5-Oxo-1-phenyl-2-pyrazolin-3-carboxylic acid
CAS119-18-6
pharmaceutical intermediate
Referencesame scaffold
Ethyl pyrazolone t
CAS6402-06-8
Dye intermediate
Referencesame scaffold
3-methyl-1-phenyl-5-pyrazolone-4'-sulfonic acid
CAS89-36-1
Pyrazolone dye intermediate
Referencesame scaffold
1-(2,5-Dichloro-4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid
CAS7253-04-5
Dye intermediate
Safety Reference
Warning
H319Causes serious eye irritation
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for Pyrazolone T (CAS 118-47-8) is 2933.19.
HS code (international, 6-digit)
2933.19
EU CN code (8-digit)
2933 19 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
5-oxo-1-(4-sulfophenyl)-4H-pyrazole-3-carboxylic acid
InChIKey
TYCNXOAPQGVAQU-UHFFFAOYSA-N
SMILES
C1C(=NN(C1=O)C2=CC=C(C=C2)S(=O)(=O)O)C(=O)O
Synonyms (16)
- PYT
- Pyrazolone T
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