Back to results
US 4,195,079 AGranted
New polycyclic ether antibiotic
AssigneePfizer Inc.
InventorsWalter D. Celmer, Walter P. Cullen, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone
Life of this patent
Estimating the term…
Abstract
A new polycyclic ether antibiotic produced by a strain of Actinomadura verrucosospora under submerged fermentation conditions is useful in controlling coccidiosis in poultry and in improving feed utilization efficiency in ruminants.
Claims6
The antibiotic Compound 51,532 when in the form as the free acid is soluble in chloroform, ethyl acetate and methylisobutyl ketone and insoluble in water;
- has a melting point of 117.degree.-132.degree. C.;
- an optical rotation of [a].sub.D.sup.25 =-11.0.degree. at a concentration of 1% in chloroform;
- an average composition by weight of 62.83% carbon, 8.80% hydrogen and 28.37% oxygen (by difference);
- and when pelleted in KBr, exhibits characteristic absorption in the infrared region at the following wavelengths in microns:
- 2.88, 3.32, 5.75, 6.06, 6.80, 7.20, 7.90, 8.50, 9.03, 9.60, 10.12, 10.75 and 11.35.
2 more elements
Dependencies are inferred from the claim text.