Are there alternatives to 8-bromo-5H-pyrido[4,3-b]indole (CAS: 1015460-56-6) in synthesis?

Several alternatives to 8-bromo-5H-pyrido[4,3-b]indole (CAS: 1015460-56-6) can be used in synthesis, depending on the desired properties and the reaction conditions. Common alternatives include bromoindoles, other indole derivatives, and related heterocycles. The choice of alternative often depends on the specific requirements of the target compound and the desired bioactivity. For example, 7-bromoindole and 9-bromoindole are often used as analogs in drug discovery and synthetic chemistry.