ProductsAntibioticsButyrolactone I Butyrolactone I SKU: B057-1MG Unit: Each Brand: TOKU-E Butyrolactone I Other products from «Antibiotics» Iptg (Isopropyl ß-D-1-Thiogalactopyranoside) # I011-1G Ampicillin Anhydrous # A043-25G Orfamide A # O025-1MG Leucomycin # L029-25MG