Boc-His(Tos)-OH Product Catalog # Size Price (USD) Quantity Boc-His(Tos)-OH110902-5G5 g$150.00 - Boc-His(Tos)-OH-5g quantity + Boc-His(Tos)-OH110902-25G25 g$390.00 - Boc-His(Tos)-OH-25g quantity + Add to cart Description Synonym: Boc-Nim-4-toluenesylfonyl-L-histidine CAS #: 35899-43-5 Molecular Formula: C18H23N3O6S Molecular Weight: 409.5