CAS: 155172-12-6 Molecular Formula: C17 H19 N3 O Molecular Weight (g/mol): 281.35 Synonym: (14bRS)-2-Methyl-1,2,3,4,10-14b-hexahydropyrazino[2,1-a]pyrido[2,3-c][2]benzazepine 2-Oxide,Mirtazapine Imp. A (EP),Pyrazino[2,1-a]pyrido[2,3-c][2]benzazepine, 1,2,3,4,10,14b-hexahydro-2-methyl-, 2-oxide,1,2,3,4,10,14b-Hexahydro-2-methylpyrazino[2,1-a]pyrido[2,3-c][2]benzazepine 2-oxide IUPAC Name: (14bRS)-2-Methyl-1,2,3,4,10-14b-hexahydropyrazino[2,1-a]pyrido[2,3-c][2]benzazepine 2-oxide SMILES: C[N+]1([O-])CCN2C(C1)c3ccccc3Cc4cccnc24