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Starsky Chemical Supplies 4-Chloroindole as Building Block

Shanghai Starsky New Material Co., Ltd. manufactures and supplies 4-Chloroindole (CAS 25235-85-2), a chemical intermediate used as a building block in organic synthesis.

25 September 2026
Starsky Chemical Supplies 4-Chloroindole as Building Block
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Shanghai Starsky New Material Co., Ltd. manufactures and supplies 4-Chloroindole (CAS 25235-85-2), a chemical compound utilized as a building block in organic synthesis. The substance is a chlorinated indole derivative.

The molecule features the fused bicyclic indole framework with a chlorine substituent at the 4-position of the benzene ring. Its molecular formula is C8H6ClN, and its molecular weight is 151.59 g/mol. The IUPAC name is 4-chloro-1H-indole.

For organic chemists, the precise placement of the chlorine atom is critical to the molecule's identity and its behavior in synthetic pathways. Different positional isomers of chloroindole exist, and 4-Chloroindole serves as a specific starting material when a synthesis requires chlorine at this particular position on the indole structure.

Rather than being considered a finished material, 4-Chloroindole is typically employed as an intermediate for downstream molecular construction. The company provides this specialty chemical for industrial and research applications.

Starsky Chemical lists key product information, including its CAS number, molecular formula, and molecular weight.

Original source: starskychemical.com