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. 14, 1987
Filed:
Jan. 10, 1986
Murray A Kaplan, Syracuse, NY (US);
Joseph B Bogardus, Manlius, NY (US);
Robert A Lipper, Manlius, NY (US);
Bristol-Myers Company, New York, NY (US);
Abstract
Crystalline adducts of 7-[(Z)-2-methoxyimino-2-(2-aminothiazol-4-yl)acetamido-3-[(1-methyl-1-pyrr olidinium)methyl]-3-cephem-4-carboxylate selected from the group consisting of the di(1-methyl-2-pyrrolidinone) adduct and the di(N-formyl pyrrolidine) adduct and salt complexes thereof have been found to be stable at even high temperatures. The crystalline adducts are prepared by forming an admixture of adducting agents, zwitterions and seed adduct crystals and inducing crystallization followed by isolating the crystals. A process for preparing adduct salt complexes is also disclosed. Crystalline zwitterion can be formed by slurrying the adducts in a solvent which removes the adducting agents.