Fosamprenavir Impurity 1

Chemical Name: Bis[(3S)-tetrahydro-3-furanyl](3S,4R,10R,11S)-4,10- bis({[(4-aminophenyl)sulfonyl](2-methylpropyl)amino}methyl)-6,8-dihydroxy-3,11-bis(phenylmethyl)-5,7,9-triroxo-2,12-diaza-6,8-diphosphatridecanedioate-6,8-oxide

Synonym: (2R,4S)-4-cyclohexyl-1-[[(R)-[(1S)-2-methyl-1-(1-oxopropoxy)propoxy](4- phenylbutyl)phosphoryl]acetyl]pyrrolidine2-carboxylic acid