Z-Pro-OH Product Catalog # Size Price (USD) Quantity Z-Pro-OH411501-100G100 g$139.00 - Z-Pro-OH-100g quantity + Z-Pro-OH411501-250G250 g$204.00 - Z-Pro-OH-250g quantity + Add to cart Description Synonym: Z-L-proline CAS #: 1148-11-4 Molecular Formula: C13H15NO4 Molecular Weight: 249.3