Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Patent
1990-08-23
1992-03-10
Rizzo, Nicholas S.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
540222, 540225, C07D50126, A61K 31545
Patent
active
050950126
ABSTRACT:
The present invention relates to new cephalosporins of the formula ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen or carboxy, with the proviso that both cannot be the same;
REFERENCES:
patent: 4866055 (1989-09-01), Kato
Imae Kiyoto
Kamachi Hajime
Masuyoshi Shinji
Okita Taka-aki
Bristol--Myers Squibb Company
Rizzo Nicholas S.
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