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An Improved Process For The Preparation Of Indocyanine Green
Abstract: The present invention involves an improved process for the preparation of Indocyanine green of Formula (I) having high purity of about 99% wherein the process comprises steps of reacting 112-trimethyl-1H-benzo[e]indole with 14-butane sulfone in boiling solvent to give 4-(112-trimethyl-1H-benzo[e]indolium-3-yl)butane-1-sulfonate. Followed by reacting 4-(112-trimethyl-1H-benzo[e]indolium-3-yl)butane-1-sulfonate of Formula (IV) and N-phenyl-N-((1E3E5E)-5-(phenylimino)penta-13-dienyl)acetamide of formula (V) in presence of sodium acetate and alcohol; and extracting the title compound formula (I) with an ester solvent.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
01 June 2018
Publication Number
36/2018
Publication Type
INA
Invention Field
PHARMACEUTICALS
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2023-12-04
Renewal Date
Applicants
DISHMAN PHARMACEUTICALS AND CHEMICALS LIMITED
Survey No. 47, Paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand
Gujarat
Ahmedabad 382220
Inventors
1. VYAS, Janmejay, Rajnikant
Dishman Pharmaceuticals and Chemicals Limited
Survey No 47, paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand
Gujarat
Ahmedabad 382220
2. DHOTRE, Himani
Dishman Pharmaceuticals and Chemicals Limited
Survey No 47, paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand
Gujarat
Ahmedabad 382220
3. SARMA, Narasimha
Dishman Pharmaceuticals and Chemicals Limited
Survey No 47, paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand
Gujarat
Ahmedabad 382220
4. PATEL, Babulal, R.
Dishman Pharmaceuticals and Chemicals Limited
Survey No 47, paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand
Gujarat
Ahmedabad 382220
5. SHARMA, Dinesh, Kumar
Dishman Pharmaceuticals and Chemicals Limited
Survey No 47, paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand
Gujarat
Ahmedabad 382220
6. PATEL, Dilip, N.
Dishman Pharmaceuticals and Chemicals Limited
Survey No 47, paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand
Gujarat
Ahmedabad 382220
7. SONI, Ashish, A.
Dishman Pharmaceuticals and Chemicals Limited
Survey No 47, paiki Sub Plot No. 1 Village, Lodariyal Taluka – Sanand
Gujarat
Ahmedabad 382220
Specification
Documents
Orders
| Section | Controller | Decision Date |
|---|---|---|
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 201827020669-IntimationOfGrant04-12-2023.pdf | 2023-12-04 |
| 1 | 201827020669-STATEMENT OF UNDERTAKING (FORM 3) [01-06-2018(online)].pdf | 2018-06-01 |
| 2 | 201827020669-PatentCertificate04-12-2023.pdf | 2023-12-04 |
| 2 | 201827020669-PRIORITY DOCUMENTS [01-06-2018(online)].pdf | 2018-06-01 |
| 3 | 201827020669-Written submissions and relevant documents [29-11-2023(online)].pdf | 2023-11-29 |
| 3 | 201827020669-FORM 1 [01-06-2018(online)].pdf | 2018-06-01 |
| 4 | 201827020669-DRAWINGS [01-06-2018(online)].jpg | 2018-06-01 |
| 4 | 201827020669-Correspondence to notify the Controller [13-11-2023(online)].pdf | 2023-11-13 |
| 5 | 201827020669-US(14)-HearingNotice-(HearingDate-14-11-2023).pdf | 2023-10-13 |
| 5 | 201827020669-DECLARATION OF INVENTORSHIP (FORM 5) [01-06-2018(online)].pdf | 2018-06-01 |
| 6 | 201827020669-FORM 3 [05-06-2023(online)].pdf | 2023-06-05 |
| 6 | 201827020669-COMPLETE SPECIFICATION [01-06-2018(online)].pdf | 2018-06-01 |
| 7 | 201827020669-FORM-26 [02-07-2018(online)].pdf | 2018-07-02 |
| 7 | 201827020669-FORM 3 [28-12-2022(online)].pdf | 2022-12-28 |
| 8 | 201827020669.pdf | 2018-08-11 |
| 8 | 201827020669-CLAIMS [24-11-2021(online)].pdf | 2021-11-24 |
| 9 | 201827020669-FER_SER_REPLY [24-11-2021(online)].pdf | 2021-11-24 |
| 9 | Abstract1.jpg | 2018-09-05 |
| 10 | 201827020669-FORM 3 [28-09-2018(online)].pdf | 2018-09-28 |
| 10 | 201827020669-OTHERS [24-11-2021(online)].pdf | 2021-11-24 |
| 11 | 201827020669-FER.pdf | 2021-10-18 |
| 11 | 201827020669-FORM 3 [12-10-2018(online)].pdf | 2018-10-12 |
| 12 | 201827020669-FORM 3 [23-04-2021(online)].pdf | 2021-04-23 |
| 12 | 201827020669-Proof of Right (MANDATORY) [01-12-2018(online)].pdf | 2018-12-01 |
| 13 | 201827020669-FORM 3 [23-10-2020(online)].pdf | 2020-10-23 |
| 13 | 201827020669-ORIGINAL UR 6(1A) FORM 26-100718.pdf | 2019-01-11 |
| 14 | 201827020669-FORM 3 [25-09-2020(online)].pdf | 2020-09-25 |
| 14 | 201827020669-ORIGINAL UR 6(1A) ASSIGNMENT-051218.pdf | 2019-04-30 |
| 15 | 201827020669-FORM 3 [08-05-2019(online)].pdf | 2019-05-08 |
| 15 | 201827020669-FORM 3 [11-03-2020(online)].pdf | 2020-03-11 |
| 16 | 201827020669-FORM 3 [04-01-2020(online)].pdf | 2020-01-04 |
| 16 | 201827020669-FORM 3 [29-06-2019(online)].pdf | 2019-06-29 |
| 17 | 201827020669-FORM 18 [04-11-2019(online)].pdf | 2019-11-04 |
| 18 | 201827020669-FORM 3 [29-06-2019(online)].pdf | 2019-06-29 |
| 18 | 201827020669-FORM 3 [04-01-2020(online)].pdf | 2020-01-04 |
| 19 | 201827020669-FORM 3 [08-05-2019(online)].pdf | 2019-05-08 |
| 19 | 201827020669-FORM 3 [11-03-2020(online)].pdf | 2020-03-11 |
| 20 | 201827020669-FORM 3 [25-09-2020(online)].pdf | 2020-09-25 |
| 20 | 201827020669-ORIGINAL UR 6(1A) ASSIGNMENT-051218.pdf | 2019-04-30 |
| 21 | 201827020669-FORM 3 [23-10-2020(online)].pdf | 2020-10-23 |
| 21 | 201827020669-ORIGINAL UR 6(1A) FORM 26-100718.pdf | 2019-01-11 |
| 22 | 201827020669-FORM 3 [23-04-2021(online)].pdf | 2021-04-23 |
| 22 | 201827020669-Proof of Right (MANDATORY) [01-12-2018(online)].pdf | 2018-12-01 |
| 23 | 201827020669-FER.pdf | 2021-10-18 |
| 23 | 201827020669-FORM 3 [12-10-2018(online)].pdf | 2018-10-12 |
| 24 | 201827020669-OTHERS [24-11-2021(online)].pdf | 2021-11-24 |
| 24 | 201827020669-FORM 3 [28-09-2018(online)].pdf | 2018-09-28 |
| 25 | 201827020669-FER_SER_REPLY [24-11-2021(online)].pdf | 2021-11-24 |
| 25 | Abstract1.jpg | 2018-09-05 |
| 26 | 201827020669-CLAIMS [24-11-2021(online)].pdf | 2021-11-24 |
| 26 | 201827020669.pdf | 2018-08-11 |
| 27 | 201827020669-FORM 3 [28-12-2022(online)].pdf | 2022-12-28 |
| 27 | 201827020669-FORM-26 [02-07-2018(online)].pdf | 2018-07-02 |
| 28 | 201827020669-COMPLETE SPECIFICATION [01-06-2018(online)].pdf | 2018-06-01 |
| 28 | 201827020669-FORM 3 [05-06-2023(online)].pdf | 2023-06-05 |
| 29 | 201827020669-DECLARATION OF INVENTORSHIP (FORM 5) [01-06-2018(online)].pdf | 2018-06-01 |
| 29 | 201827020669-US(14)-HearingNotice-(HearingDate-14-11-2023).pdf | 2023-10-13 |
| 30 | 201827020669-Correspondence to notify the Controller [13-11-2023(online)].pdf | 2023-11-13 |
| 30 | 201827020669-DRAWINGS [01-06-2018(online)].jpg | 2018-06-01 |
| 31 | 201827020669-Written submissions and relevant documents [29-11-2023(online)].pdf | 2023-11-29 |
| 31 | 201827020669-FORM 1 [01-06-2018(online)].pdf | 2018-06-01 |
| 32 | 201827020669-PRIORITY DOCUMENTS [01-06-2018(online)].pdf | 2018-06-01 |
| 32 | 201827020669-PatentCertificate04-12-2023.pdf | 2023-12-04 |
| 33 | 201827020669-STATEMENT OF UNDERTAKING (FORM 3) [01-06-2018(online)].pdf | 2018-06-01 |
| 33 | 201827020669-IntimationOfGrant04-12-2023.pdf | 2023-12-04 |
Search Strategy
| 1 | searchstrategy201827020669E_30-05-2021.pdf |