The word "guacetin" is spelled as /ɡwɑːsɪtᵻn/. The letters "g" and "w" together create the /ɡw/ sound. The "a" in the first syllable is pronounced as /ɑː/, while the "e" in the second syllable is pronounced as /ɪ/. The final two letters, "ti", are pronounced as /tᵻn/. It is important to pay attention to the placement of stress in this word, which falls on the first syllable /ɡwɑː/.
Guaiacetin.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.