Are there alternatives to 4-Bromo-2-hydroxybenzoic acid (CAS: 1666-28-0) in synthesis?

There are alternative compounds that can serve similar functions in synthesis, such as 4-chloro-2-hydroxybenzoic acid or 4-nitro-2-hydroxybenzoic acid. These alternatives can be used as substitutes depending on the specific requirements of the reaction. In some cases, isomers or analogs may be used, but it is important to consider the reactivity and solubility properties of the chosen alternative to ensure successful synthesis.