英文别名Ketotifen N-Oxide; 10-(1-methyl-1-oxidopiperidin-1-ium-4-ylidene)-5H-benzo[1,2]cyclohepta[3,4-b]thiophen-4-one; 4,9-Dihydro-4-(1-Methyl-1-oxido-4-piperidinylidene)-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one; 4,9-Dihydro-4-(1-Methyl-4-piperidinylidene)-10H-benzo[4,5]cyclohepta[1,2-b]thiophen-10-one N-Oxide; Ketotifen FuMarate EP IMpurity D; 1-methyl-4-(10-oxo-9,10-dihydro-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-4-ylidene)piperidine 1-oxide; Ketotifen EP Impurity D 
