Navigation
Patent Information
Application Number
476/MUM/2010
Patent Number
Invention Field
CHEMICAL
Publication Type
INA
Publication Number
30/2013
Status
Grant Date
Filing Date
Grant Date
Renewal Date
Abstract
Abstract: Disclosed herein is a process for preparation and purification of DL-Homocysteine thiolactone hydrochloride comprising demethylation of DL-methionine to obtain disodium salt of DL-homocysteine, followed by its cyclisation to obtain DL-Homocysteine thiolactone hydrochloride and removal of inorganic salt from the product mixture by employing phase transfer catalyst in aqueous alcoholic medium. The process of the present invention also comprises removal of excess water and hydrochloric acid after cyclisation to DL-Homocysteine thiolactone hydrochloride using aromatic hydrocarbon or its derivatives.
Applicants
1. WANBURY LIMITED
B-WING, 10TH FLOOR,
BSEL TECH PARK,
SECTOR 30A,
PLOT NO. 39/5 & 39/5A,
OPP. VASHI RAILWAY STATION,
NAVI- MUMBAI - 400 703,
MAHARASHTRA,
INDIA.
Inventors
1. CHAND, PREM
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
2. KADLAG, ASHOK KARBHARI
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
3. TALEKAR, PRAVIN GANPAT
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
4. PATIL, KIRAN MOHAN
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
5. PAWAR, HITESH SURESH
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
6. SANGANABHATLA, SHANKAR
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
Specification
1. CHAND, PREM
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
2. KADLAG, ASHOK KARBHARI
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
3. TALEKAR, PRAVIN GANPAT
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
4. PATIL, KIRAN MOHAN
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
5. PAWAR, HITESH SURESH
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
6. SANGANABHATLA, SHANKAR
WANBURY LTD., R & D CENTRE
(API), C-415,
TTC INDUSTRIAL AREA,
MIDC, TURBHE,
NAVI MUMBAI - 400 705,
MAHARASHTRA,
INDIA
Specification
Documents
Documents
| Name | Date | |
|---|---|---|
| 1 | 476-MUM-2010- AFR.pdf | 2023-02-27 |
| 10 | 476-MUM-2010-FORM 1(9-3-2010).pdf | 2018-08-10 |
| 11 | 476-mum-2010-form 1.pdf | 2018-08-10 |
| 12 | 476-MUM-2010-FORM 18(6-8-2013).pdf | 2018-08-10 |
| 13 | 476-mum-2010-form 2(title page).pdf | 2018-08-10 |
| 14 | 476-mum-2010-form 2.pdf | 2018-08-10 |
| 15 | 476-mum-2010-form 26.pdf | 2018-08-10 |
| 16 | 476-mum-2010-form 3.pdf | 2018-08-10 |
| 17 | 476-mum-2010-form 5.pdf | 2018-08-10 |
| 2 | 476-MUM-2010-AbandonedLetter.pdf | 2018-08-10 |
| 3 | 476-mum-2010-abstract.pdf | 2018-08-10 |
| 4 | 476-mum-2010-claims.pdf | 2018-08-10 |
| 5 | 476-MUM-2010-CORRESPONDENCE(6-8-2013).pdf | 2018-08-10 |
| 6 | 476-MUM-2010-CORRESPONDENCE(9-3-2010).pdf | 2018-08-10 |
| 7 | 476-mum-2010-correspondence.pdf | 2018-08-10 |
| 8 | 476-mum-2010-description(complete).pdf | 2018-08-10 |
| 9 | 476-MUM-2010-FER.pdf | 2018-08-10 |