| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d669af06cb2abbcd6823699582a97002 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-28 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-40 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-28 |
| filingDate |
1988-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e6e021a3c0e988950582c30f7e68e1e6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9ffbf6c1702c52ac578e2df7a9e8b8c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c58ce45932cd4438feb5372a930eb80 |
| publicationDate |
1990-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4921971-A |
| titleOfInvention |
Method of preparing alkaline earth metal salts of 2-pyrrolidone-5-carboxylic acid |
| abstract |
Alkaline earth metal salts of 2-pyrrolidone-5-carboxylic acid (pyroglutamic acid) are prepared by heating the corresponding alkaline earth metal salt of glutaminic acid in the solid state to a temperature in a range of 120° C. to 250° C. until the water liberated by the intramolecular condensation (cyclocondensation) has been completely eliminated. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8623422-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010048697-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7589235-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009291926-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8183409-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108516949-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010143473-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101863819-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6362215-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007282127-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8541471-B2 |
| priorityDate |
1987-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |