Hemateun or Hematein: How To spell?

The word Hemateun is misspelled against Hematein, a noun meaning "A reddish brown or violet crystalline substance, C16H12O6, got from hematoxylin by partial oxidation, and regarded as analogous to the phthaleins."

Word contains consecutive vowels 'EI' in between alphabets hemat & n is misspelled as 'EU'
Wrong Spelling:  hemat-eu-n 
Correct Spelling:  hemat-ei-n 
Check more misspelled words of Hematein to spell it correct.