| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3c929c99230ab8234d3271c2815cb3ef |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D211-34 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D211-34 |
| filingDate |
2017-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_77a8fa99f02ce02fa8528758b28a23fa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c28c42acdff3d5b0703d6e45874cfd0d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aa30db8a353d26d4b5ae8eb3a5d953a6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_61b00fa415ecb5abcd6ac234695437d8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00625fb66497277ac210c2601dfa9bc7 |
| publicationDate |
2022-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11440882-B2 |
| titleOfInvention |
Process for the preparation of dexmethyl phenidate hydrochloride |
| abstract |
Disclosed herein a process for the preparation of highly pure dexmethylphenidate hydrochloride (Formula-I) which comprises the steps of neutralization of dl-threomethylphenidate hydrochloride to dl-threo methylphenidate; subsequent resolution of dl-threo methylphenidate using amino acid or its derivatives as chiral resolution agent to yield dexmethylphenidate salt; hydrolysis of the salt and further conversion of dexmethylphenidate into its hydrochloride salt. |
| priorityDate |
2016-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |