Regiospecific nitration and reduction yields 7 aminosancycline 56 Figure 14, an inactive antibacterial compound, while reductive alkylation with formaldehyde affords 7 dimethylamino sancycline, known as minocycline 5, and trade named Minocin, a tetracycline possessing potent broad spectrum antibacterial activity 21 what is ivermectin