英文别名Ibutilide Related Compound A; 1,4-Diketo Ibutilide; N-Ethyl-N-heptyl-4-[(4-Mesylamino)phenyl]-4-oxobutanamide; N-Ethyl-N-heptyl-4-[(methylsulfonyl)amino]-gamma-oxo-benzenebutanamide; N-ethyl-N-heptyl-4-[4-(methanesulfonamido)phenyl]-4-oxobutanamide