http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-485452-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K31-593 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-593 |
| filingDate | 1936-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1938-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-485452-A |
| titleOfInvention | Improvements in processes for producing antirachitic substances |
| abstract | Cholesterol is treated with non-gaseous oxidizing agents to produce provitamin and is irradiated to produce vitamin. The treatments may be successive. Oxidizing agents mentioned are hydrogen peroxide, benzoyl peroxide, eosin and chromic anhydride. The cholesterol may be rendered free from provitamin by conversion into the dibromide, recrystallizing the dibromide, removing the bromine and recrystallizing the cholesterol. Examples describe the oxidation treatment with hydrogen peroxide with simultaneous and successive irradiation respectively, and with benzoyl peroxide. It is stated that chromic anhydride in glacial acetic acid may be used in quantity one-fifth to one-sixth of the quantity of cholesterol. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-875514-C |
| priorityDate | 1936-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.