(19)
(11) EP 0 863 764 A1

(12)

(43) Date of publication:
16.09.1998 Bulletin 1998/38

(21) Application number: 96932204.0

(22) Date of filing: 11.09.1996
(51) International Patent Classification (IPC): 
G01N 30/ 06( . )
C07D 207/ 16( . )
C07K 5/ 02( . )
C12N 9/ 99( . )
G01N 30/ 34( . )
G01N 30/ 88( . )
 A61K 38/ 00( . )
C07D 487/ 04( . )
C07K 5/ 078( . )
G01N 27/ 62( . )
G01N 30/ 72( . )
(86) International application number:
PCT/US1996/014566
(87) International publication number:
WO 1997/009993 (20.03.1997 Gazette 1997/13)
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

(30) Priority: 15.09.1995 US 19950003825P
28.03.1996 GB 19960006503

(71) Applicants:
  • MERCK & CO., INC.
    Rahway, New Jersey 07065 (US)
  • MERCK FROSST CANADA INC.
    Kirkland Quebec H9H 3L1 (CA)

(72) Inventors:
  • QIN, Xue-Zhi
    Rahway, NJ 07065-0907 (US)
  • VISENTINI, Giuseppina
    Kirkland, Quebec H9H 3L1 (CA)
  • WANG, Qingxi
    Rahway, NJ 07065-0907 (US)

(74) Representative: Hiscock, Ian James 
European Patent Department, Merck & Co., Inc., Terlings Park, Eastwick Road
Harlow, Essex CM20 2QR
Harlow, Essex CM20 2QR (GB)

   


(54) METHOD FOR ANALYZING ISOMERS OF ENALAPRIL AND ENALAPRILAT