Batroxobin is a defibrinogenating hemostatic agent derived from the venom of a pit viper, Bothrops atrox moojeni. In addition to batroxobin, the venom of Bothrops atrox has a composition of 10.2% neutral carbohydrate. Batroxobin is a serine protease, which cleaves the 16 Arginine – 17 Glycine bond in fibrinogen. The MW of batroxobin is approximately 43,000 g/mol-1, and it contains 231 amino acids.