C12H5ClO3
232.62 g/mol
Dye & PigmentWarning
4-Chloro-1,8-naphthalic anhydride
CAS4053-08-1EC223-760-7
Category
Dye & Pigment
Compound Class
Heterocycle
Primary Use
Fluorescent solvent dye intermediate
4-Chloro-1,8-naphthalic anhydride is a halogenated aromatic anhydride used primarily as an intermediate in the synthesis of fluorescent solvent dyes. It features a tricyclic core with two ester groups and a chlorine substituent.
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
ReferenceSame Category
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photographic dye intermediate
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fluorescent membrane dye
ReferenceSame Category
1,1′-[(6-Phenyl-1,3,5-triazine-2,4-diyl)diimino]di(9,10-anthraquinone)
CAS4118-16-5
Pigment for ink and coatings
ReferenceSame Category
Coomassie violet R200
CAS4129-84-4
acid dye for textiles
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for 4-Chloro-1,8-naphthalic anhydride (CAS 4053-08-1) is 2917.39.
HS code (international, 6-digit)
2917.39
EU CN code (8-digit)
2917 39 85
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
8-chloro-3-oxatricyclo[7.3.1.05,13]trideca-1(12),5(13),6,8,10-pentaene-2,4-dione
InChIKey
UJEUBSWHCGDJQU-UHFFFAOYSA-N
SMILES
C1=CC2=C(C=CC3=C2C(=C1)C(=O)OC3=O)Cl
Synonyms (16)
- 4-Chloronaphthalic anhydride
- 4-Chloronapthalic anhydride
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