| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0a4783407e23a20dbe43d383a5d0fcb5 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-13 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P13-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C311-37
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C217-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P13-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C311-39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C311-37
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C217-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C217-54 |
| filingDate |
2002-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2010-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b1b81c75e16a2d03abea8dfccf0b6b5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1fc87edf30e94a38de068c5f3706604b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43406ee1efc65c33b54395ca86e58364 |
| publicationDate |
2010-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-100579958-C |
| titleOfInvention |
Racemized tamsulosin free alkali and preparation method thereof |
| abstract |
Racemic tamsulosin free base is obtained in solid form. The solid form can be formed by precipitating racemic tamsulosin free base from a solvent that comprises at least one of water or a lower alcohol. The crystalline free base exhibits polymorphism and two unique forms are identified. Novel intermediates are disclosed useful in the production of tamsulosin free base: a sulfonic acid salt of 2-(o-ethoxyphenoxy)ethylamine and (3-aminosulfonyl-4-methoxy)phenylacetone. |
| priorityDate |
2001-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |