C4H2Cl2S
153.03 g/mol
Industrial ChemicalDanger
2,5-DICHLOROTHIOPHENE
CAS3172-52-9EC221-638-8
Category
Industrial Chemical
Compound Class
Aromatic
Primary Use
Chemical intermediate for synthesis
2,5-Dichlorothiophene is a halogenated heterocyclic compound used as a chemical intermediate in organic synthesis. Its structure features an aromatic ring containing sulfur and two chlorine substituents.
chemical intermediate for 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
ReferenceSame Category
Cyclohexyl isocyanate
CAS3173-53-3
pharmaceutical and agricultural chemical intermediate
ReferenceSame Category
Benzyl isocyanate
CAS3173-56-6
Organic synthesis intermediate
ReferenceSame Category
1,5-naphthylene diisocyanate
CAS3173-72-6
Manufacture of polyurethane and rubber
ReferenceSame Category
Pentaerythritol tetrakis(3-mercaptobutyrate)
CAS31775-89-0
Polymerization crosslinker
Safety Reference
Danger
H226Flammable liquid and vapour
H300Fatal if swallowed
H341Suspected of causing genetic defects
Customs Tariff Classification
The international HS code for 2,5-DICHLOROTHIOPHENE (CAS 3172-52-9) is 2934.99.
HS code (international, 6-digit)
2934.99
EU CN code (8-digit)
2934 99 90
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
2,5-dichlorothiophene
InChIKey
FGYBDASKYMSNCX-UHFFFAOYSA-N
SMILES
C1=C(SC(=C1)Cl)Cl
Synonyms (5)
- 2,-Dichlorothiophene
- 2,5-DICHLOROTHIOPHENE
- Thiophene, 2,5-dichloro-
- Thiophene,5-dichloro-
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