Polymorphic forms of an angiotensin II antagonist

US5693812A · kind A · utility

Assignee

• MERCK & CO., INC. · US

Inventors

• Gerald S. Brenner · Norristown, US
• Louis Crocker · Montgomery, US
• Hossain Jahansouz · Burlingame, US
• Robert D. Larsen · Bound Brook, US
• Chris Hugh Senanayake · Brookfield, US
• Andrew S. Thompson · Mountainside, US
• Karen C. Thompson · Lansdale, US
• Thomas R. Verhoeven · Cranford, US

Key dates

• Filing date: Jun 3, 1996
• Grant date: Dec 2, 1997
• Expiry date: Jun 3, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D471/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Polymorphic forms of the angiotensin II receptor antagonist, 3-2'-(N-benzoyl)sulfonamidobiphenyl-4-yl!methyl-5,7-dimethyl-2-ethyl-3H-i midazo4,5-b!pyridine and a method for the preparation of these crystal forms.