LU75683A1LU75683ALU75683ALU75683A1LU 75683 A1LU75683 A1LU 75683A1LU 75683 ALU75683 ALU 75683ALU 75683 ALU75683 ALU 75683ALU 75683 A1LU75683 A1LU 75683A1
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LU75683A
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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