Pfizer Corporation

John R Oscarson

Walter P Cullen

Walter D Celmer

Junsuke Tone

Riichiro Shibakawa

Charles E Moppett

Liang H Huang

John B Routien

Hiroshi Maeda

John R Routien

An antibiotic has been isolated from fermentation of a new Streptomyces culture. The new ionophore is active as an antibacterial and anticoccidial agent.

Streptomyces sp. N664-30 which produces an ionophore antibacterial agent

Inophore antibacterial agent from streptomyces

Antibiotics CP-54,715 and CP-54,716, identified by their analytical characteristics, are produced by fermentation of a new microbial species Catenuloplanes jaonicus in a new genus Catenuloplanes and are active against gram-positive and anaerobic infections.

Antibiotics produced by a new microbe, Catenuloplanes japonicus

A new subspecies of Streptomyces nigellus Prokop, designated Streptomyces nigellus Prokop subsp. africanus Huang subsp. nov. ATCC 31496, when propagated under aerobic conditions in aqueous nutrient media, produces a mixture of antibiotics. One of these antibiotics is the known macrolide antibiotic cirramycin A; the ansamycin antibiotic is an analogue of protostreptovaricin and the structure has been established as 21-hydroxy, 25-demethyl, 25-methylthioprotostreptovaricin I.

Ansamycin antibiotic

Process for producing new ansamycin antibiotic

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.

New polycyclic ether antibiotic

A new polycyclic ether antibiotic produced by a strain of Streptomyces hygroscopicus under submerged fermentation conditions is useful in controlling coccidiosis in poultry and in improving feed utilization efficiency in ruminants.

Polycyclic ether antibiotic produced by a strain of streptomyces

New polycyclic ether antibiotics produced by a species of actinomycete under submerged fermentation conditions are useful in controlling coccidiosis in poultry and in improving feed utilization efficiency in ruminants.

Polycyclic ether antibiotics produced by new species of actinomycete

A new polycyclic ether antibiotic with anticoccidial, insecticidal and antimicrobial activity, its production by fermentation and methods for its recovery and purification are described.

Polycyclic ether antibiotic

Polycyclic ether antibiotic for combating insects

A new species of Micromonospora, designated Micromonospora saitamica sp. nov. Routien, when subjected to submerged aerobic fermentation, produces at least four antibiotics. One of these is previously reported rubradirin produced by Streptomyces achromogenes var. rubradiris NRRL 3061.

Mixture of antibiotics produced by new species of micromonospora

Antibiotic Compound 37,504 is produced by the submerged aerobic fermentation under controlled conditions of a new species of Micromonospora designated Micromonospora viridifaciens sp. nov. Routien, ATCC 31146.

Growing community of inventors

Groton, CT, United States of America

John R Oscarson