Description

3-Bromo-2-chlorothiophene (CAS: 40032-73-3) is a high-purity halogenated thiophene derivative with the molecular formula C₄H₂BrClS. This compound is a versatile building block in organic synthesis, particularly in the pharmaceutical and agrochemical industries. With a purity of 98%, it is ideal for researchers and scientists engaged in the development of novel heterocyclic compounds, ligands, and functional materials. The bromo and chloro substituents on the thiophene ring make it a valuable intermediate for cross-coupling reactions, such as Suzuki-Miyaura and Stille couplings. Available in various quantities, this product is rigorously tested for quality and consistency to meet the demands of advanced research applications.

Properties

• CAS Number: 40032-73-3
• Complexity: 68.7
• IUPAC Name: 3-bromo-2-chloro-thiophene
• InChI: InChI=1S/C4H2BrClS/c5-3-1-2-7-4(3)6/h1-2H
• InChI Key: KSHOQKKCPJELBV-UHFFFAOYSA-N
• Exact Mass: 195.87491
• Molecular Formula: C4H2BrClS
• Molecular Weight: 197.48
• SMILES: C1=CSC(=C1Br)Cl
• Topological: 28.2
• Monoisotopic Mass: 195.87491
• Synonyms: 3-Bromo-2-chlorothiophene, 40032-73-3, 2-Chloro-3-Bromo thiophene, Thiophene, 3-bromo-2-chloro-, MFCD00043883, 2-Chloro-3-bromothiophene, 3-bromo-2-chloro-thiophene, BIDD:GT0537, SCHEMBL788030, SCHEMBL1177817, DTXSID60369160, 3-Bromo-2-chlorothiophene, 98%, GEO-00416, SBB092197, AKOS005258218, AC-4917, CS-W015667, DS-2659, PS-3797, SY022252, DB-006360, B2013, ST50405450, EN300-132800, InChI=1/C4H2BrClS/c5-3-1-2-7-4(3)6/h1-2

3-Bromo-2-chlorothiophene is widely used as a key intermediate in the synthesis of pharmaceuticals, agrochemicals, and organic electronic materials. Its reactive halogen groups enable efficient participation in palladium-catalyzed cross-coupling reactions, facilitating the construction of complex molecular architectures. Researchers utilize this compound in the development of thiophene-based polymers for optoelectronic applications. It also serves as a precursor in the preparation of bioactive molecules and ligands for catalysis.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (89.1%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (89.1%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.