43076-16-0

9,10-Dioxo Ketotifen Ketotifen EP Impurity G Ketotifen fumarate impurity G Ketotifen FuMarate EP IMpurity G Ketotifen Hydrogen Fumarate Impurity G Ketotifen Hydrogen Fumarate EP Impurity G Ketotifen Impurity 7(Ketotifen EP Impurity G） Ketotifen EP Impurity G (9,10-Dioxo Ketotifen) 10-(1-methylpiperidin-4-ylidene)benzo[1,2]cyclohepta[3,4-b]thiophene-4,5-dione 4-(1-Methylpiperidin-4-ylidene)-4H-benzo[4,5]cyclohepta[1,2-b]thiophen-9,10-dione 4-(1-methylpiperidin-4-ylidene)-4H-benzo[4,5]cyclohepta[1,2-b]thiophene-9,10-dione 4-(1-Methyl-4-piperidinylidene)-4H-benzo[4,5]cyclohepta[1,2-b]thiophene-9,10-dione 4H-Benzo[4,5]cyclohepta[1,2-b]thiophene-9,10-dione, 4-(1-methyl-4-piperidinylidene)-