Z-Ile-ONp Product Catalog # Size Price (USD) Quantity Z-Ile-ONp411002-5G5 g$150.00 - Z-Ile-ONp-5g quantity + Z-Ile-ONp411002-25G25 g$270.00 - Z-Ile-ONp-25g quantity + Add to cart Description Synonym: Z-L-isoleucine-4-nitrophenyl ester CAS #: 2130-99-6 Molecular Formula: C20H22N2O6 Molecular Weight: 386.4