How is 4-Hydrazino-7-nitro-2,1,3-benzoxadiazole - hydrazine (1:1) (CAS: 131467-87-3) typically synthesized?

4-Hydrazino-7-nitro-2,1,3-benzoxadiazole - hydrazine (1:1) is typically synthesized through a multi-step process involving the condensation of hydrazine with 7-nitro-2,1,3-benzoxadiazole. This reaction is catalyzed by acids or bases and usually yields a high purity product with a selectivity of up to 95%. The overall yield can vary depending on the reaction conditions and purification methods used.