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US 4,560,509 AGranted
Antibiotic A39079 factor S-1
AssigneeEli Lilly and Company
InventorsRonald D. Johnson, Ralph E. Kastner, LaVerne D. Boeck
Life of this patent
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Abstract
A new antibiotic of the rifamycin class, A39079 factor S-1, which has the structure ##STR1## is an effective broad-spectrum antibiotic and increases feed-utilization efficiency in animals.
Claims5
Antibiotic A39079 factor S-1 which in its reduced form has structure 1:
- ##STR5## and which in its oxidized form has structure 2 ##STR6##
The C.sub.2 -C.sub.18 -mono- or di-carboxylic acid ester derivatives of A39079 factor S-1.
Dependencies are inferred from the claim text.