http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113620850-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1c49bc93e7b72e949f8ccc901ca483a3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C333-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C333-04 |
| filingDate | 2021-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ad1b63fa0b86cb1b8a6d9baca706bbd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f390d3f89d189bf52834fa00804041ff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a616251a5c905ea4413ec0fbcd3abfa8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a44ce86c4a68bc8cf1189ba3beffa1c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b19f3980bf5970023adca38247434252 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e624ffe48ad502b5fae9b7e829d20f56 |
| publicationDate | 2021-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113620850-A |
| titleOfInvention | A kind of synthetic method for improving the stability of tetracycline |
| abstract | The invention discloses a synthesis method for improving the stability of diquat, comprising the following steps: dissolving the insecticidal mono in ethyl chloride, adjusting pH, cooling the prepared insecticidal solution to 0 degrees, and starting to drip Sodium cyanide solution, the solution is divided into water, and the organic phase is transferred to the alcoholization kettle; calcium chloride and concentrated hydrochloric acid are added to the gas generating kettle, and the temperature is slowly increased. into the reacted dichloroethane solution, add a small amount of water, add methanol, pass in the hydrogen chloride gas generated by the gas generator, transfer the alcoholization kettle material into the precipitation kettle, open the vacuum, heat up, add a certain amount of water, stir, When the material is completely dissolved, add quantitative dilute sulfuric acid, and transfer it to the crystallization kettle while it is still hot. The transferred material is cooled to about 0 degrees, and it can be filtered by suction, and the filter cake is the monohydrochloride of moth. The invention has the advantages of low cost, small investment, low energy consumption, simple operation and greatly improved product stability. |
| priorityDate | 2021-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.