| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_05a203d85ee01909eaf728dc16f0f6cb |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2603-46 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C237-26 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C237-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-65
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-77
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 |
| filingDate |
1974-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1979-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
IE-39803-B1 |
| titleOfInvention |
Improved process for 11a-chlorination of oxytetracycline |
| abstract |
1465542 11a-Chloro-5-oxytetracycline-6,12- hemiketal PFIZER Inc 4 Feb 1974 [2 Aug 1973] 05124/74 Heading C2C 11a - Chloro - 5 - oxytetracycline - 6,12 - hemiketal is obtained in the form of a strong mineral acid addition salt by chlorinating 5-oxytetracycline or an acid addition salt thereof at - 10 to - 40 C. and pH 6À5-7À7 in a water-miscible reaction-inert solvent or its mixture with water and then adding a strong mineral acid to lower the pH of the reaction mixture thus obtained to <1À0. Reference has been directed by the Comptroller to Specification 998,294.n[GB1465542A] |
| priorityDate |
1973-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |