LU73111A1LU73111ALU73111ALU73111A1LU 73111 A1LU73111 A1LU 73111A1LU 73111 ALU73111 ALU 73111ALU 73111 ALU73111 ALU 73111ALU 73111 A1LU73111 A1LU 73111A1
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LU73111A
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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