The word "Piperoxan" is a chemical compound used as a pharmaceutical drug. It is spelled as /paɪˈpɛrəksən/ in IPA phonetic transcription. The first syllable is pronounced like "pie", the second syllable is stressed and sounds like "per", followed by the /ə/ sound pronounced as "uh", and the last syllable ends with /sən/ pronounced as "son". The English language often has complex spelling rules, which is why the use of IPA phonetic transcription is essential in accurately pronouncing words like "Piperoxan".