http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109574919-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-61 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-61 |
| filingDate | 2019-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109574919-B |
| titleOfInvention | A kind of purification and preparation method of etoricoxib |
| abstract | The invention relates to a method for purifying etoricoxib, which comprises the following operations: causing a reduction reaction of the raw material drug of etoricoxib to be purified and a reducing agent in a solvent. It also relates to a method for preparing etoricoxib. The purity of the finished etoricoxib obtained by the preparation method of the present invention is greater than 99.9%, the total content of impurity F, impurity 20 and impurity 21 is less than 0.001%, and impurity M is not detected. |
| priorityDate | 2019-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 75.