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Crystalline salts of [3S(Z)]-2[[[1-(2-amino-4-thiazolyl)-2-[[2,2-dimethyl-4-oxo-1-(sulfooxy)- 3-azetidinyl]amino]-2-oxoethylidene]-amino]oxy]acetic acid

US Patent 4751220 · Granted Jun 14, 1988

Estimated economic value: $20,779,000

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