Pronunciation: [t͡ʃˈɪnɪn] (IPA)
Correct spelling for the English word "chinin" is [t͡ʃˈɪnɪn], [tʃˈɪnɪn], [tʃ_ˈɪ_n_ɪ_n] (IPA phonetic alphabet).
Quinine.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Correct spelling for chinin