ProductsAntibioticsButyrolactone I Butyrolactone I SKU: B057-1MG Unit: Each Brand: TOKU-E Butyrolactone I Other products from «Antibiotics» Cefotetan Disodium # C117-1G Collismycin # C181-1MG Ketoconazole # K006-500MG Acriflavine Hydrochloride # A019-25G