Are there alternatives to 7-Bromo-5-chloro-1H-indole (CAS: 292636-08-9) in synthesis?

While 7-Bromo-5-chloro-1H-indole (CAS: 292636-08-9) is a specific compound, alternatives in synthesis include using isomers or analogs such as unsubstituted indoles or bromo-chloro substituted derivatives of other aromatic compounds. Common alternative reagents might include other halogenated indoles or substituted indoles that can be synthesized using various methodologies like Friedel-Crafts alkylation or nucleophilic substitution reactions.