http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110669082-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H1-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H5-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H1-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H5-06 |
| filingDate | 2019-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110669082-B |
| titleOfInvention | A kind of purification and separation method of N-acetyl-D-glucosamine |
| abstract | The invention belongs to the field of medicine and chemical industry, and discloses a purification and separation method of N-acetyl-D-glucosamine. The method for purifying and separating N-acetyl-D-glucosamine of the present invention comprises the following steps: adding lactic acid glycine hydrochloride and hydrochloric acid to the chitin powder, mixing, and filtering to obtain a filtrate; heating up, adding hydrochloric acid dropwise, stirring, cooling and decolorizing to obtain D Glucosamine hydrochloride; adding an ethanolic solution of sodium ethoxide, and filtering to obtain free D-glucosamine solution; adding acetic anhydride to obtain a solution containing N-acetyl-D-glucosamine; concentrating, cooling, and crystallizing and filtering to obtain N-acetyl- The crude D-glucosamine is soaked in absolute ethanol, stirred and filtered, and dried to obtain high-purity N-acetyl-D-glucosamine. The method of the invention can obtain N-acetyl-D-glucosamine with a purity of more than 99.95%, the technological process is simple, the post-processing is easy, the cost is low, the used alcoholic solvent can be recycled, the environmental protection is economical, and it is suitable for large-scale promotion and application. |
| priorityDate | 2019-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.