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4,10-.beta.-diacetoxy- 2.alpha.-benzoyloxy-5.beta.,20-epoxy-1-hydroxy-9-oxo-19-norcyclopropa[g]t ax-11-en-13.alpha.-yl (2R,3S)-3-tert-butoxycarbonylamino-2-hydroxy-3-phenylpropionate dihydrate and its process of preparation

US Patent 6150541 · Granted Nov 21, 2000

Estimated economic value: $10,033,000

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