C10H9NO4S
239.25 g/mol
Dye & PigmentDanger
7-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID
CAS87-02-5EC201-718-9
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
dye intermediate
7-Amino-4-hydroxy-2-naphthalenesulfonic acid is an aminonaphthalenesulfonic acid derivative of 2-naphthalenesulfonic acid, featuring an amino group at position 7 and a hydroxyl group at position 4. It is recognized as a metabolite and is primarily used as a dye intermediate in industrial chemical synthesis.
dye intermediatemetabolite in biochemical research
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
SimilarStructure SimilarSimilarity 0.77
1-Naphthol-3,6-disulfonic acid
CAS578-85-8
intermediate for azo dyes
SimilarStructure SimilarSimilarity 0.76
2-amino-8-hydroxynaphthalene-6-sulfonic acid
CAS90-51-7
Dye intermediate for azo dyes
ReferenceSame Category
Rhoduline acid
CAS87-03-6
dye intermediate
ReferenceSame Category
3-chloro-O-toluidine
CAS87-60-5
Intermediate in azo dye manufacture
ReferenceSame Category
4-Bromo-2-nitroaniline
CAS875-51-4
dye intermediate
ReferenceSame Category
2,4,6-trimethylaniline
CAS88-05-1
Dye intermediate
Safety Reference
Danger
H314Causes severe skin burns and eye damage
Customs Tariff Classification
The international HS code for 7-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID (CAS 87-02-5) is 2922.21.
HS code (international, 6-digit)
2922.21
EU CN code (8-digit)
2922 21 00
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
7-amino-4-hydroxynaphthalene-2-sulfonic acid
InChIKey
KYARBIJYVGJZLB-UHFFFAOYSA-N
SMILES
C1=CC2=C(C=C(C=C2C=C1N)S(=O)(=O)O)O
Synonyms (33)
- 3-amino-6-sulfo-8-naphthol
- 6-amino-3-sulfo-1-naphthol
- 7-NH2-4-OH-2-NSA
- Aminonaphthol sulfonic acid J
- I acid
- Isogamma acid
- J acid
- J-Saure
- Kyselina I
- Kyselina I [Czech]
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