ProductsAntibioticsButyrolactone Ii Butyrolactone Ii SKU: B085-5MG Unit: Each Brand: TOKU-E Butyrolactone Ii Other products from «Antibiotics» Byssochlamic Acid # B083-2.5MG Acetomycin # A199-2.5MG Sulfadoxine (Sulphadoxine) # S035-10G Mizoribine # M037-25MG