Rhain or Rhein: How To spell?

The word Rhain is misspelled against Rhein, a noun meaning "Chrysophanic acid."

Word contains consecutive vowels 'EI' in between alphabets rh & n is misspelled as 'AI'
Wrong Spelling:  rh-ai-n 
Correct Spelling:  rh-ei-n 
Find more wrongly spelled words of Rhein to spell it well.