http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102267951-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5456846495c5fa8a02f5eaae9faae290 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5968d0fc0997827902b3c2a98b90b70a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-545 |
| filingDate | 2011-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c214a00443bc0becaf67b3dbda311f3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_77cd19b31145f15b9227f214d553b324 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e4d9c5a35535e5949adf59f1140ab62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7b62991b8fb6f14d761f8a5a46fcd1e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_554429958dc7565e1ec906716f6527d6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a787b9b891808eee4fd694e5a6c8777e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aeb7d60994b99c94dce26017bfdd2172 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0925efc427613550464b5914f1ad9b2a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97d9cad36f74e91286099454dd326076 |
| publicationDate | 2013-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102267951-B |
| titleOfInvention | Method for purifying urapidil with counter solvent recrystallization method |
| abstract | The invention discloses a method for purifying urapidil, in particular to a method for purifying urapidil with a counter solvent recrystallization method, belonging to the field of purification of compounds. The method is implemented by the following steps of: adding urapidil of which the purity is over 96 percent into an organic solvent; heating and dissolving; performing suction filtration; pouring the filtrate into a counter solvent; standing; performing suction filtration under reduced pressure; and performing vacuum drying to obtain the urapidil. The method has the advantages of simpleness in operation, short time needed for precipitating a product, higher yield of the obtained urapidil than that of the prior art, and purity of over 99.82 percent (HPLC (High Performance Liquid Chromatography)); and the method is extremely suitable for industrial production. |
| priorityDate | 2011-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.