http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2020392129-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c6ed83b9d5c28c6c356d1d08d58501e7 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-13 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D455-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D455-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D455-03 |
| filingDate | 2018-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3e7b917ca04145e4c96bd406100f4cb0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1cd6222afe66659cea71ddab5d9eab81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2360f0565638c384da2e7ee8aa2438f0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_39e55e944af24c8510e6efd20d0ca27f |
| publicationDate | 2020-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2020392129-A1 |
| titleOfInvention | Crystal Forms of Demethyleneberberine Hydrochloride and Preparation Method Therefor |
| abstract | Provided are four crystal forms, A, B, C and D, of demethyleneberberine hydrochloride, and a preparation method therefor, and further provided are X-ray powder diffraction characteristic absorption peaks, infrared absorption peaks and DSC spectra of the four crystal forms. The X-ray powder diffraction characteristic diffraction peaks of the crystal forms are at about 8.205°, 8.805°, 10.817°, 14.835°, 15.479°, 16.668°, 17.492°, 18.529°, 20.656°, 21.536°, 23.538°, 25.657°, 26.192°, and 28.808°. A preparation method for the four crystal forms of the demethyleneberberine hydrochloride is also involved. The preparation method has a simple process, a high yield and a low cost; and has a high product purity and a stable quality. |
| priorityDate | 2018-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.