exbivirumab exbivirumab exbivirumab is a human monoclonal antibody developed for the treatment of hepatitis b infections. exbivirumabmonoclonal antibodytypewhole antibodysourcehumantargethepatitis b surface antigenclinical dataatc codenoneidentifierscas number569658-80-6 nchemspidernoneunii5q374m1s1pchemical and physical dataformulac6416h9924n1732o1982s44molar mass144446.75 g·mol−1 ny (what is this?) (verify)