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