Benzocaine



![Prepd by the esterification of p-aminobenzoic acid:[30][31] by the reduction of ethyl p-nitrobenzoate:[32][33]](/Images/godic/202412/21/Benzocaine_synthesis.svg0524.png")
Benzocaine is a local anesthetic commonly used as a topical pain reliever or in cough drops. It is the active ingredient in many over-the-counter anesthetic ointments such as products for oral ulcers. It is also combined with antipyrine to form A/B otic drops to relieve ear pain and remove earwax.