| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8affb0e6162e07b05cffeb063bbc654e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2030-027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2030-062
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02A50-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N30-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-94 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N30-02 |
| filingDate |
2020-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_93b101dec8999934e21cee57ec452fdf |
| publicationDate |
2021-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-112209882-A |
| titleOfInvention |
Levoornidazole impurity C and its preparation method and use |
| abstract |
The present invention provides levornidazole impurity C and its preparation method and use. The preparation method includes: (1) reacting levoornidazole and an oxidizing agent in an organic solvent; (2) post-processing the reaction solution to obtain the levornidazole impurity C. Also disclosed is the use of the impurity C as an impurity reference substance in the quality study of levornidazole raw materials. |
| priorityDate |
2019-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |