Are there alternatives to 1H-Indole-3-carbohydrazide (CAS: 15317-58-5) in synthesis?

Several alternatives to 1H-Indole-3-carbohydrazide exist in synthetic chemistry, including related indoles and carbohydrazides. These alternatives can be more readily available or more cost-effective, such as 1H-indole itself or 2-hydrazinopyridine. Additionally, other heterocyclic compounds or substituted hydrazides can serve as viable alternatives depending on the specific synthetic route and desired properties.