cas no:76646-91-8||chemical formula:c8h9br2no5s||molecular weight: 391.03000||exact mass:388.85682||(2s,5r)-6,6-dibromo-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4,4-dioxide
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