28 . Label the stereogenic center(s) in each compound. A molecule may have zero, one, of more than one stereogenic centers. A) \( \quad 9,10,11,12,13,14 \) B) \( 1,3,5,7 \) C) \( 2,4,6,8 \) D) \( 2,3,4,5,5,7 \) E) zero stereogenic centers 29. Label the stereogenic center(s) in each compound. A molecule may have zero, one, or more than one stereogenic centers. A) 1 8) 2 C) 3 E) zero stereogenic centers 30. Label the stereogenic center(s) in each compound. A molecule may have zero, one, or more than one stereogenic centers. A) 1,2 B) 2,3 C) 3,4 D) 3,5 E) zero stereogenic centers 31. Label the stereogenic centers in each drug.