PRODUCT AVAILABILITY: Did you know you can view a product's availability right on the product page? Simply enter the quantity you want to purchase and the current availability will appear below the item.
Not yet rated
NOTE: Due to special handling or shipping requirements, these products will have additional fees added during checkout. Click HERE for a description of what fees might be charged.
Active metabolite of lactacystin, a widely used selective inhibitor of the 20S proteasome, with at least 10 times better activity; irreversibly alkylates subunit X of the 20S proteasome.