4506-57-4

4-(1-Methyl-4-piperidinyl)-4H-benzo[4,5]cyclohepta[1,2-b]thiophene-4-ol is an intermediate in the synthesis of 10-Deoxo-9,10-dehydro Ketotifen (D231580), which is a Ketotifen (K315100) impurity, as new, potent 5-HT2A receptor.