Fmoc-D-Asp-OtBu Product Catalog # Size Price (USD) Quantity Fmoc-D-Asp-OtBu100409-1G1 g$165.00 - Fmoc-D-Asp-OtBu-1g quantity + Fmoc-D-Asp-OtBu100409-5G5 g$537.00 - Fmoc-D-Asp-OtBu-5g quantity + Add to cart Description Synonym: N-α-Fmoc-D-aspartic acid α-t-butyl ester CAS #: 134098-70-7 Molecular Formula: C23H25NO6 Molecular Weight: 411.5