Are there alternatives to 2-Bromo-5-nitro-4-pyridinamine (CAS: 84487-15-0) in synthesis?

There are several alternatives to 2-Bromo-5-nitro-4-pyridinamine (CAS: 84487-15-0) that can be used in synthesis, such as 2-chloro-5-nitro-4-pyridinamine or 2-fluoro-5-nitro-4-pyridinamine. These compounds may offer similar reactivity patterns but with different substituents, providing flexibility in the design of synthetic pathways. Other alternatives include using different reagents or intermediates that can lead to the same functional group, such as nitrosonium salts or diazonium salts.