Chemical Name: 1H-Pyrazolo[3,4-c]pyridine-3-carboxylic acid, 4,5,6,7-tetrahydro-1-(4-methoxyphenyl)-7-oxo-6-[4-(2-oxo-1-piperidinyl)phenyl]-, methyl ester
Synonym: Mirtazapine EP Impurity B ; [2-[(2RS)-4-Methyl-2-phenylpiperazin-1-yl]pyridin-3-yl]methanol ; Acyclomirtazapine alcohol