Z-His-OH Product Catalog # Size Price (USD) Quantity Z-His-OH410901-5G5 g$95.00 - Z-His-OH-5g quantity + Z-His-OH410901-25G25 g$281.00 - Z-His-OH-25g quantity + Add to cart Description Synonym: Z-L-histidine CAS #: 14997-58-1 Molecular Formula: C14H15N3O4 Molecular Weight: 289.0