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C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
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ZA00777353A1976-12-161977-12-09A stable and therapeutically useful derivative of d(-)alpha-aminobenzylpenicillin and process for its preparation
ZA777353B
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22*2* * 2* * 2**trihaloethyl**44haloo cyclobutanee11on * its method of production * intermediate for said production and use for production of derivative of cyclopropanecarboylic acid