Pergenol is a fictional word with no recognized spelling. However, using IPA phonetic transcription, one possible spelling of the word would be /pərˈɡɛnɔl/. The first syllable is pronounced with a schwa sound, followed by a stressed "gè" sound, and ending with a nasalized "ɔl" sound. Despite the unusual spelling, the phonetic transcription clearly shows how the word should be pronounced, which is important for communicating effectively in written and spoken language.
Commercial name of a preparation of hydrogen peroxide.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.