Pronunciation: [kwəlnˈɒl] (IPA)
Correct spelling for the English word "qulnol" is [kwəlnˈɒl], [kwəlnˈɒl], [k_w_ə_l_n_ˈɒ_l] (IPA phonetic alphabet).
Hydroquinone.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Correct spelling for qulnol