ProductsAntibioticsButyrolactone I Butyrolactone I SKU: B057-5MG Unit: Each Brand: TOKU-E Butyrolactone I Other products from «Antibiotics» Ochratoxin B # O015-5MG 5-Azacytidine # A095-500MG Putrescine Dihydrochloride # P103-100G Doxorubicin # D063-5MG