ProductsAntibioticsButyrolactone Ii Butyrolactone Ii SKU: B085-5MG Unit: Each Brand: TOKU-E Butyrolactone Ii Other products from «Antibiotics» Sparfloxacin # S005-1G Sinefungin # S069-2.5MG 3'-Ethoxy-56-Dihydro-Spinosyn J # S091-1MG Triacetylphloroglucinol # T100-5MG