129318-23-6 2-[(Benzoylamino-2-phenylethyl)phosphinicodiyl]-3-phenylpropanoic acid AIDS-001522 AIDS001522 Benzenepropanoic acid, .alpha.-[[[1-(benzoylamino)-2-phenylethyl]hydroxyphosphinyl]methyl]- PhCONHEt(Ph)P(O)(OH)-3-Ph-PrAcid