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Resolution of trans-2-(alkoxycarbonylethyl)-lactams useful in the synthesis of 1-(4-fluoro-phenyl)-3(R)-(S)-hydroxy-3-(4-fluorophenyl)-propyl!-4(S)-(4 -hydroxyphenyl)-2-azetidinone

US Patent 5919672 · Granted Jul 6, 1999

Estimated economic value: $553,075,000

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