http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-186740-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d202e9e866984fe229f6facc38f1d740 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J73-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D9-02 |
| filingDate | 1993-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_70d1135cc945f95219edac506b0c9870 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab3abb03ad1b1794d69758ea41cd290c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4a3190e54d6e76d73d3033ef485b757 |
| publicationDate | 2004-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-186740-B1 |
| titleOfInvention | Methods for making Polymorphic Form I and Form II 17beta- (N-t-butylcarbamoyl) -4-aza-5-androst-1-en-3-one in substantially pure form |
| abstract | A method for producing polymorphic form I of 17β- (Nt-butylcarbamoyl) -4-aza--5a-androst-1-en-3-one of formula 2 in substantially pure form, characterized by the steps of (1) crystallizing from a mixture of finasteride in: a) a mixture of ethyl acetate and water in which the water content of the solvent mixture is at most about 3.5 mg / ml; or in b) a mixture of isopropyl acetate and water in which the water content of the solvent mixture is at most about 1 , 6 mg / ml at about 25 ° C (2) recovery of the solids formed; and (3) removing the solvent therefrom. PL PL PL |
| priorityDate | 1993-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.