ProductsAntibioticsButyrolactone V Butyrolactone V SKU: B086-1MG Unit: Each Brand: TOKU-E Butyrolactone V Other products from «Antibiotics» Pseurotin A # P096-1MG Fumitremorgin B # F050-1MG Bactenecin # B033-1MG Embelin # E063-50MG