Correct spelling for the English word "brenzcain" is [bɹˈɛnzke͡ɪn], [bɹˈɛnzkeɪn], [b_ɹ_ˈɛ_n_z_k_eɪ_n] (IPA phonetic alphabet).
Guaiacolbenzyl ester; a local anesthetic, usually applied by cataphoresis to take the place of cocaine.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.