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Legal status
Patent not validated
| (51) | INT.CL. | C07C 403/20 | |
| C07C 51/353 | |||
| C07C 59/64 |
| (11) | Number of the document | 2708530 |
| (13) | Kind of document | T |
| (96) | European patent application number | 12786430.4 |
| Date of filing the European patent application | 2012-05-07 | |
| (97) | Date of publication of the European application | 2014-03-19 |
| (45) | Date of publication and mention of the grant of the patent | 2016-08-10 |
| (46) | Date of publication of the claims translation |
| (86) | Number | PCT/CN2012/075130 |
| Date | 2012-05-07 |
| (87) | Number | WO 2012/155796 |
| Date | 2012-11-22 |
| (30) | Number | Date | Country code |
| 201110124227 | 2011-05-13 | CN |
| (72) |
DENG, Qingjun, CN
WANG, Shaohui, CN
ZHU, Qiang, CN
GAO, Taiping, CN
LI, Yongsheng, CN
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| (73) |
Chongqing Huabangshengkai Pharm. Co., Ltd,
No. 666 Rongjun Road Nanjin Street Sub-district Hechuan District, Chongqing 401520,
CN
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| (54) | STEREOSPECIFIC SYNTHESIS PROCESS FOR TRETINOIN COMPOUNDS |
| STEREOSPECIFIC SYNTHESIS PROCESS FOR TRETINOIN COMPOUNDS |