ProductsAntibioticsButyrolactone I Butyrolactone I SKU: B057-5MG Unit: Each Brand: TOKU-E Butyrolactone I Other products from «Antibiotics» Anguinomycin A # A122-0.5MG Gibberellic Acid A4 # G044-5MG Fluvoxamine Maleate # F051-50MG Amikacin # A002-5G