Are there alternatives to Azasetron Impurity 1 (CAS: 123040-79-9) in synthesis?

In synthesis, alternatives to Azasetron Impurity 1 (CAS: 123040-79-9) may include other azasetron-related impurities or structurally similar compounds that can serve as intermediates. Common substitutes include isomers or analogs with similar functional groups. For instance, 5-hydroxyazasetron or 6-methylazasetron can be used as alternatives depending on the specific synthesis requirements. Care should be taken to ensure these substitutes meet the necessary purity and regulatory standards.