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Home/Compounds/Pharmaceutical Intermediate/2-Chlorothiophene
C4H3ClS
118.59 g/mol
Pharmaceutical IntermediateDanger

2-CHLOROTHIOPHENE

CAS96-43-5EC202-505-3
Category
Pharmaceutical Intermediate
Compound Class
Heterocycle
Primary Use
Pharmaceutical Intermediate

2-Chlorothiophene is a halogenated heteroaromatic compound used primarily as a pharmaceutical intermediate. Its structure features a chlorine atom attached to a thiophene ring, giving it distinct reactivity for organic synthesis.

Pharmaceutical intermediate

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

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Safety Reference

Flammable
Flammable
Toxic
Toxic
Harmful
Harmful
Danger
H225Highly flammable liquid and vapour
H226Flammable liquid and vapour
H301Toxic if swallowed
H311Toxic in contact with skin
H315Causes skin irritation
H319Causes serious eye irritation
H330Fatal if inhaled
H335May cause respiratory irritation

Customs Tariff Classification

The international HS code for 2-CHLOROTHIOPHENE (CAS 96-43-5) 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-chlorothiophene

InChIKey

GSFNQBFZFXUTBN-UHFFFAOYSA-N

SMILES

C1=CSC(=C1)Cl

Synonyms (9)
  • 2-CHLOROTHIOPHENE
  • 2-Thienyl chloride
  • 5-chlorothiophene
  • Thienyl chloride
  • Thiophene, 2-chloro-
  • chlorothiophene

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