Correct spelling for the English word "blenal" is [blˈiːnə͡l], [blˈiːnəl], [b_l_ˈiː_n_əl] (IPA phonetic alphabet).
Santalol carbonate, a yellowish oily liquid, used in the treatmen of gonorrhea.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.