63555-63-5 C 3a Octapeptide C 3a-Octapeptide C3a(70-77) Complement 3a (70-77) Complement 3a octapeptide L-Arginine, N2-(N-(N-(N-(N-(N-(N-L-alanyl-L-seryl)-L-histidyl)-L-leucyl)glycyl)-L-leucyl)-L-alanyl)-