This compound is a dye intermediate featuring a sulfonated stilbene structure with a pyrazolone and an amino group. It is primarily used in the manufacturing of synthetic dyes.
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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1-naphthylamine-6-sulfonic acid
dye intermediate
Dianisidine
Intermediate for dyes and pigments
3-amino-4-methoxybenzanilide
Pigment intermediate
P-cresidine
Chemical intermediate for dyes
The international HS code for 5-amino-2-[(E)-2-[4-(3-methyl-5-oxo-4H-pyrazol-1-yl)-2-sulfophenyl]ethenyl]benzenesulfonic acid (CAS 119-74-4) is 2933.19.
2933.19
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.
5-amino-2-[(E)-2-[4-(3-methyl-5-oxo-4H-pyrazol-1-yl)-2-sulfophenyl]ethenyl]benzenesulfonic acid
OQZZKKAUSICVQC-NSCUHMNNSA-N
CC1=NN(C(=O)C1)C2=CC(=C(C=C2)/C=C/C3=C(C=C(C=C3)N)S(=O)(=O)O)S(=O)(=O)O
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