Sub Group: Chemical Impurities Catalog Number: 9869 Formula: C43H51NO14 CAS Number: 162784-72-7 Molecular Weight: 805.86 Synonyms:(2b,5b,7a,13a)-4-Acetoxy-13-(((2R,3S)-3-[(tert-butoxycarbonyl)amino]-2-hydroxy-3-phenylpropanoyl)oxy)-1,7-dihydroxy- 9,10-di