| 摘要 |
This invention generally relates to processes for making zilpaterol and salts thereof, as well as processes for making intermediates that,, may be used to make zilpaterol and salts thereof. The zilpaterol and salts prepared in accordance with this invention can be used to increase the rate of weight gain, improve feed efficiency, and/or increase carcass leanness in livestock, poultry, and fish. |
