شوائب كيتوتيفين فومارات EP G

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 fumarate);Ketotifen USP Related Compound G ; 9,10-Dioxo Ketotifen;aromatics