4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid is a sulfonic acid derivative of naphthalene containing both a hydroxyl and a methylamino substituent. It is primarily used as an intermediate in the production of 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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4-Hydroxy-6-methylamino-2-naphthalene sulfonic acid
Naphthalene sulfonic acid dye intermediate
Rhoduline acid
dye intermediate
3-biphenylamine
Manufacture of azo dyes
Naphthalene-1,6-diamine
dye intermediate
Naphthalene-2,6-diamine
dye intermediate
4-Bromo-1-naphthylamine
dye and pigment intermediate
The international HS code for 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid (CAS 22346-43-6) is 2922.29.
2922.29
2922 29 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
4-hydroxy-7-(methylamino)naphthalene-2-sulfonic acid
ZCNCWYFISJTFHB-UHFFFAOYSA-N
CNC1=CC2=CC(=CC(=C2C=C1)O)S(=O)(=O)O
Sourcing 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid?
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