Crystalline, anhydrous .delta.-form of 2-[4-(2-furoyl)-...

Details Crystalline, anhydrous .delta.-form of 2-[4-(2-furoyl)-... Crystalline, anhydrous .delta.-form of 2-[4-(2-furoyl)-...

C - Chemistry, Metallurgy

07

D

167/222, 260/253

C07D 405/14 (2006.01) A61K 31/505 (2006.01) C07D 405/12 (2006.01)

Patent

CA 1240999

A B S T R A C T A new anhydrous crystalline form of prazosine hydrochloride characterised by the following bands in the infra-red spectrum in potassium bromide is described: 3445 cm-1 (2.90 µm), 1010 cm-1 (9.90 µm) (duplet), and 768 cm-1 (13.03 µm). This new form is distinguished by its surprisingly great stability in storage compared with known polymorphous forms of prazosine.

529737

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