80318-70-3 Asp-arg-pepstatyl Isovaleryl-valyl-valyl-statyl-alanylstatyl-aspartic acid-arginine Isovaleryl-valyl-valylstatyl-ala-statyl-asp-arg Pepstatin A, 5a-L-aspartic acid-5b-(N5-(imino(nitroamino)methyl)-L-ornithine)-, bis(phenylmethyl) ester Pepstatyl, asp-arg- Pepstatyl, aspartyl-arginine-