C18H15NO3
293.3 g/mol
Dye & PigmentWarning
Naphthol AS-OL
CAS135-62-6EC205-206-6
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
Naphthol AS coupler for azo dyes
Naphthol AS-OL is a naphthalene-based aromatic amide compound used as a coupling component in the synthesis of azo dyes. It is structurally characterized by a This compound framework.
Naphthol AS coupler for azo dye synthesis
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 0.78
2-Naphthalenecarboxamide, N,N'-(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis[3-hydroxy-
CAS91-92-9
Naphthol dye intermediate
SimilarStructure SimilarSimilarity 0.74
N-(5-Chloro-2-methoxyphenyl)-3-hydroxynaphthalene-2-carboxamide
CAS137-52-0
Naphthol AS dye coupling component
SimilarStructure SimilarSimilarity 0.74
3-hydroxy-2-naphtho-O-phenetidide
CAS92-74-0
Pigment intermediate
ReferenceSame Category
5'-Chloro-3-hydroxy-2'-methyl-2-naphthanilide
CAS135-63-7
Naphthol dye intermediate
ReferenceSame Category
3-Hydroxy-N-2-naphthyl-2-naphthamide
CAS135-64-8
Naphthol dye intermediate
ReferenceSame Category
2-naphthol-6-sulfonic acid sodium
CAS135-76-2
dye intermediate
ReferenceSame Category
2-aminobenzothiazole
CAS136-95-8
Azo dye intermediate
Referencesame scaffold
Naphthol AS-LC
CAS4273-92-1
Naphthol AS dye coupling component
Safety Reference
Warning
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
H411Toxic to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for Naphthol AS-OL (CAS 135-62-6) is 2924.29.
HS code (international, 6-digit)
2924.29
EU CN code (8-digit)
2924 29 70
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
3-hydroxy-N-(2-methoxyphenyl)naphthalene-2-carboxamide
InChIKey
AQYMRQUYPFCXDM-UHFFFAOYSA-N
SMILES
COC1=CC=CC=C1NC(=O)C2=CC3=CC=CC=C3C=C2O
Synonyms (71)
- ANARTHOL AS-OL
- Acna Naphthol O
- Amanil Naphthol AS-OL
- Amarthol AS-OL
- Anthonaphthol MF
- Azoground OL
- Azoic coupling component 20
- Azonaphtol OA
- Azotol OA
- BLUE BASE BB
- Brentosyn FR
- C.I. Developer 22
- CONAZOIC BO
- Celcot RK
- Cibanaphthol RK
- DYCOSTHOL AS-OL
- Daito Grounder OL
- Diathol BO
- Diathol OL
- Dragonthol OL
- HEBEITHOL AS-OL
- Hiltonaphthol AS-OL
- Irganaphthol RK
- KIWA GROUNDER OL
- Kambothol ASOL
- Miketazol Developer NLF
- Mitsui Naphthozol OL
- NAFTOL AS-OL
- NAPHTHOL OL
- NAPTHOL ASOL
- Naftolo MOL
- Naphtanilide OL
- Naphtazol F
- Naphthanil OL
- Naphthoide OL
- Naphthol AS-DL
- Naphthol AS-OL
- Naphtoelan OL
- Naphtol AS-OL
- Solunaptol FRL
- Tulathol AS-OL
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