The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 1978
Filed:
Jan. 18, 1977
Berkeley W Cue, Groton, CT (US);
Pfizer Inc., New York, NY (US);
Abstract
The invention relates to novel chemical compounds which have useful antibacterial properties and are also of value in promoting animal growth and improving animal feed efficiency. More specifically, these new chemical compounds are certain sulfonylhydrazones of 1,4-dioxoquinoxaline-2-carboxaldehyde, 4-oxoquinoxaline-2-carboxaldehyde and certain derivatives thereof of formula (I): ##STR1## wherein A is N or N .fwdarw. O; R is a member selected from the group consisting of alkyl having from one to five carbon atoms, trifluoromethyl, phenyl, npahthyl, benzyl, styryl and phenyl substituted by up to two members selected from the group consisting of Cl, F, Br, CH.sub.3, CH.sub.3 O and NO.sub.2 ; R.sup.1 is hydrogen or methyl; R.sup.2 is hydrogen or methyl; R.sup.3 is a 6- or 7-position substituent and is selected from the group H, Cl, CH.sub.3, CH.sub.3 O, SO.sub.2 NH.sub.2, SO.sub.2 NHCH.sub.3 and SO.sub.2 N(CH.sub.3).sub.2 ; R.sup.4 is a 7- or 6-position substituent and is selected from the group H, Cl and CH.sub.3 ; with the proviso that when R.sup.4 is Cl or CH.sub.3, R.sup.3 and R.sup.4 are the same.