Local Anesthetic Benzocaine CAS NO: 94-09-7S k y p e: sales05_267 Alias: Americaine , ETHYL 4-AMINOBENZOATECAS NO: 94-09-7EINECS : 202-303-5MF: C9H11NO2MW: 165.19Purity: 99.5%Appearance:white powderProduct description:This medication is used to relieve pain and itching from certain ear conditions (e.g., middle ear inflammation with congestion andor fluid build-up, "swimmer's ear", outer ear inflammation). Benzocaine is a topical anesthetic that helps to numb the pain and itching.