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US 4,072,711 AGranted
Tetrahydro-4-semicarbazono-1-naphthylureas
AssigneeAmerican Cyanamid Company
InventorsGoro Asato, Terence James Bentley
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Abstract
There are provided certain substituted-1,2,3,4-tetrahydro-4-imino-1-naphthylureas, methods of preparation thereof, and methods of use of said naphthylureas for enhancing feed efficiency and for promoting the growth rate of veterinary homothermic animals.
Claims4
A compound of formula:
- ##STR42## wherein X is oxygen or sulfur;
- R.sub.1 is hydrogen or alkyl C.sub.1 -C.sub.4 ;
- R.sub.2 is hydrogen, alkyl C.sub.1 -C.sub.4, 2-propynyl, alkoxy C.sub.1 -C.sub.4 or benzyloxy;
- R.sub.3 is the moiety ##STR43## the racemic mixtures and the optical isomers thereof.
1 more element
Dependencies are inferred from the claim text.