Asenapine maleate; (3aR,12bR)-5-chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenzo[2,3:6,7]oxepino[4,5-c]pyrrole maleate; CAS No.: 85650-56-2; (3aR,12bR)-5-chloro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenzo[2,3:6,7]oxepino[4,5-c]pyrrole maleate is a white powder. Store at 4 C in dark containers. This compound is light-sensitive; CAS No.: 85650-56-2 avoids humidity.