Metacrolin or Metacrolein: How To spell?

The word Metacrolin is misspelled against Metacrolein, a noun meaning "A polymeric modification of acrolein obtained by heating it with caustic potash. It is a crystalline substance having an aromatic odor."

Word contains consecutive vowels 'EI' in between alphabets metacrol & n is misspelled as 'I' as letter 'E' is phonetically igno
Wrong Spelling:  metacrol-i-n 
Correct Spelling:  metacrol-ei-n 
Find more incorrect spellings of Metacrolein to spell right way.