Which class of anesthetics is characterized by having two "i's" in their name?

The class of anesthetics characterized by having two "i's" in their name is Amides. This class includes well-known anesthetics like lidocaine and bupivacaine, which contain two "i's" in their names. Amides are distinguished by their specific chemical structure that includes an amide bond, which affects their metabolism and pharmacokinetics.

In contrast, Esters, Ketones, and Alcohols do not possess this double "i" feature in their common names. While Esters might have a single "i" in some names, they do not meet the criteria specified in the question. Ketones, on the other hand, refer to a different chemical group altogether and lack the "i" characteristic. Alcohols, while being used in various medical applications, also do not have two "i's" in their names. Therefore, the identification of Amides based on the presence of two "i's" accurately aligns with the details required in the question.