| Autor: |
P S, Nys, E V, Kol'tsova, N N, Shellenberg, E M, Savitskaia, M M, Levitov |
| Rok vydání: |
1976 |
| Předmět: |
|
| Zdroj: |
Antibiotiki. 21(5) |
| ISSN: |
0003-5637 |
| Popis: |
7-Aminodesacetoxycephalosporanic acid (7-ADCA) of 99 per cent purity was prepared by enzymatic hydrolysis of 7-phenylacetamidodesacetoxycephalosporanic acid. Its isoelecti point was determined by the electrophoretic method. Potentiometric titration of zwitterion of 7-ADCA was performed and the constants of its ionization were calculated. Minimum solubility of 7-ADCA zwitterion was determined and the curve of 7-ADCA solubility at wide pH ranges was estimated. Equilibrium of 3 forms of 7-ADCA was estimated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
