LU49877A1LU49877ALU49877ALU49877A1LU 49877 A1LU49877 A1LU 49877A1LU 49877 ALU49877 ALU 49877ALU 49877 ALU49877 ALU 49877ALU 49877 A1LU49877 A1LU 49877A1
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LU49877A
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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