CRYSTALLINE 2-(4-(2-FUROYL)-(2-PIPERAZIN)-1-YL)-4-AMINO-6,7-DIMETHOXYQUINAZOLINE HYDROCHLORIDE AND PHARMACEUTICAL COMPOSITIONS

CRYSTALLINE 2-(4-(2-FUROYL)-(2-PIPERAZIN)-1-YL)-4-AMINO-6,7-DIMETHOXYQUINAZOLINE HYDROCHLORIDE AND PHARMACEUTICAL COMPOSITIONS

A new anhydrous crystalline form of prazosine hydrochloride characterized by the following bands in the infra-red spectrum in potassium bromide is described: 3445 cm-1 (2.90 mu m), 1010 cm-1 (9.90 mu m) (duplet), and 768 cm-1 (13.03 mu m). This new form is distinguished by its surprisingly great sta...

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Bibliographische Detailangaben
Hauptverfasser: ADRENS, K H, SCHICKANEDER, H, GRAFE, I
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
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Zusammenfassung:A new anhydrous crystalline form of prazosine hydrochloride characterized by the following bands in the infra-red spectrum in potassium bromide is described: 3445 cm-1 (2.90 mu m), 1010 cm-1 (9.90 mu m) (duplet), and 768 cm-1 (13.03 mu m). This new form is distinguished by its surprisingly great stability in storage compared with known polymorphous forms of prazosine.