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There is provided a process of preparing 3-(2-tmidazline-2-ylthio) indole hydrochloride (Tinazoline) by condensing indole and ethylene thiourea in alcoholic solvent using iodine and alkali iodide solution. The resulting material is purified using organic solvent. This material is further treated with the alkali and resultant free base which obtain is isolated. Reacting the free base by suspending in alcohol and treating with alcoholic hydrochloric acid to pH around 2; the hydrochloride salt is obtained. This salt is further purified by charcoal treatment and using alcohol as solvent to obtain a crystalline material.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
05 September 2003
Publication Number
Publication Type
Invention Field
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
1900-01-01
Renewal Date
Applicants
ALKEM LABORATORIES LTD
510, SHAH NAHAR,
WORLI,
MUMBAI,
Inventors
1. DR. TELANG RAMESH BABURAO
C/O. ALKEM LABORATORIES LTD.,
C/6-1, M.I.D.C. INDUSTRIAL AREA,
TALOJA - 410 208,
TALUKA - PANVEL,
DIST - RAIGAD,
2. MR. ARVINDKUMAR CHAKRAPANI
C/O. ALKEM LABORATORIES LTD.,
C/6-1, M.I.D.C. INDUSTRIAL AREA,
TALOJA - 410 208,
TALUKA - PANVEL,
DIST - RAIGAD,
3. MR. ANKUSH MARUTI TAWRE
C/O. ALKEM LABORATORIES LTD.,
C/6-1, M.I.D.C. INDUSTRIAL AREA,
TALOJA - 410 208,
TALUKA - PANVEL,
DIST - RAIGAD,
4. MR. SANJEEV KUMAR
C/O. ALKEM LABORATORIES LTD.,
C/6-1, M.I.D.C. INDUSTRIAL AREA,
TALOJA - 410 208,
TALUKA - PANVEL,
DIST - RAIGAD,
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 921-mum-2003-form 26(05-07-2003).pdf | 2003-07-05 |
| 2 | 921-mum-2003-form 19(05-09-2003).pdf | 2003-09-05 |
| 3 | 921-mum-2003-form 3(08-09-2003).pdf | 2003-09-08 |
| 4 | 921-mum-2003-form 13(08-11-2004).pdf | 2004-11-08 |
| 5 | 921-mum-2003-form 1(08-11-2004).pdf | 2004-11-08 |
| 6 | 921-mum-2003-form 2(granted)-(02-12-2004).pdf | 2004-12-02 |
| 8 | 921-mum-2003-claim(granted)-(02-12-2004).pdf | 2004-12-02 |
| 10 | 921-mum-2003-cancelled page(02-12-2004).pdf | 2004-12-02 |
| 11 | 921-mum-2003-abstract(granted)-(02-12-2004).pdf | 2004-12-02 |
| 13 | 921-mum-2003-form 13(01-03-2005).pdf | 2005-03-01 |
| 14 | 921-mum-2003-correspondence(01-03-2005).pdf | 2005-03-01 |
| 15 | 921-mum-2003-correspondence(ipo)-(08-12-2005).pdf | 2005-12-08 |
| 16 | 921-MUM-2003-CORRESPONDENCE(RENEWAL PAYMENT LETTER)03-08-2009.pdf | 2009-08-03 |