ProductsAntibioticsButyrolactone Ii Butyrolactone Ii SKU: B085-1MG Unit: Each Brand: TOKU-E Butyrolactone Ii Other products from «Antibiotics» Minocycline # M062-50MG Monazomycin # M066-5MG Josamycin # J001-100MG Fumitremorgin B # F050-1MG