Sourcing 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid?
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dye intermediate
Sourcing 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
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.
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
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CNC1=CC2=CC(=CC(=C2C=C1)O)S(=O)(=O)O