abstract |
A new form of the polymorphic crystal of (R) -5- [2- (5,6-diethyl-indan-2-yl-amino) -1-hydroxy-ethyl] -8-hydroxy-1H-quinolin-2 maleate -one, designated as the form of the Qalfa crystal, which is useful in the treatment of inflammatory or obstructive diseases of the respiratory tract. A method for the preparation of the Qalfa crystal form is also described. (see formula (I)). |