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The Patent Office Journal 09/09/2005
21670
(12) PATENT APPLICATION PUBLICATION
(19) INDIA
(21) Application No.: 1074/MUM/2003
A
(22) Date of filing of Application: 16/10/2003
(43) Publication Date: 09/09/2005
(54) Title of the invention: “PROCESS FOR PREPARATION OF 5-CYANOPHTHALIDE (INTERMEDIATE OF
CITALOPRAM)”
(51) International classification
: C07D 307/87
(31) Priority Document No
: NIL
(32) Priority Date
: N.A.
(33) Name of priority country
: NIL
(86) International Application No and
Filing Date
:
:
NIL
N.A.
(87) International Publication No
: NIL
(61) Patent of addition to Application No : NIL
Filed on
: N.A.
(62) Divisional to Application No
: NIL
Filed on
: N.A.
(71) Name of Applicant:
M/S. IPCA LABORATORIES LIMITED
Address of the Applicant:
48, KANDIVLI INDUSTRIAL ESTATE,
MUMBAI – 400 067, MAHARASHTRA, INDIA
(72) Name of the Inventor:
ARORA SUNIL MAHAVIR
Filed U/S 5(2) before The Patents (Amendment)
Ordinance, 2004: NO
(57) Abstract: The present invention discloses an improved process for preparation of 5-cyanophthalide which is the key intermediate of
citalopram.
Drawing : NIL Sheets
Total Pages: 15
