Rhyn or Rhein: How To spell?

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

Word contains consecutive vowels 'EI' in between alphabets rh & n is misspelled as 'Y'
Wrong Spelling:  rh-y-n 
Correct Spelling:  rh-ei-n 
Navigate all incorrect spellings of Rhein to spell it right.