Nuclen or Nuclein: How To spell?

The word Nuclen is misspelled against Nuclein, a noun meaning "A constituent of the nuclei of all cells. It is a colorless amorphous substance, readily soluble in alkaline fluids and especially characterized by its comparatively large content of phosphorus. It also contains nitrogen and sulphur."

Word contains consecutive vowels 'EI' in between alphabets nucl & n is misspelled as 'E' as letter 'I' is phonetically ignored
Wrong Spelling:  nucl-e-n 
Correct Spelling:  nucl-ei-n 
Check more misspelled words of Nuclein to spell it correct.