Acrolaun or Acrolein: How To spell?

The word Acrolaun is misspelled against Acrolein, a noun meaning "A limpid, colorless, highly volatile liquid, obtained by the dehydration of glycerin, or the destructive distillation of neutral fats containing glycerin. Its vapors are intensely irritating."

Word contains consecutive vowels 'EI' in between alphabets acrol & n is misspelled as 'AU'
Wrong Spelling:  acrol-au-n 
Correct Spelling:  acrol-ei-n 
Check more misspelled words of Acrolein to spell it correct.