Product Name:    Benzocaine

Synonyms:    NSC 4688;Benzocaine (See B197952 for Labelled);Benzocaine, USP, EP;Ethyl 4-aMinobenzoate, 98% 100GR;Ethyl 4-aMinobenzoate, 98% 500GR;(p-(Ethoxycarbonyl)phenylaMine;4-(Ethoxycarbonyl)phenylaMine;4-Aminobenzoic Acid Ethyl Ester Benzocaine

CAS:    94-09-7

MF:    C9H11NO2

MW:    165.19

EINECS:    202-303-5

Product Categories:    C8 to C9;Carbonyl Compounds;Aromatic Esters;Esters;Amines;Aromatics;Intermediates & Fine Chemicals;Pharmaceutical intermediate;API;Pharma materials;Intermediate of Tetracaine hydrochloride;medical intermediate;Benzocaine;organic interme;Pharmaceuticals;Research Chemical;94-09-7

Benzocaine (ethyl p-aminobenzoate) is used topically by itself or in combination with menthol or phenol in nonprescription dosage forms such as gels, creams, ointments, lotions, aerosols, and lozenges to relieve pain or irritation caused by such conditions as sunburn, insect bites, toothache, teething, cold sores or canker sores in or around the mouth, and fever blisters. Benzocaine is a lipophilic local anesthetic agent with a short duration of action.

Like most amino ester-type local anesthetics, it is easily hydrolyzed by plasma cholinesterase. Because of its low pKa, however, it is un-ionized under most physiological conditions and, therefore, can only bind to the lipid side of the local anesthetic receptor. It also can easily cross membranes into systemic circulation to cause systemic toxicities. Furthermore, being a PABA derivative, it has similar allergenic properties to procaine and is contraindicated with sulfonamide antibacterial agents.