Rhayc or Rheic: How To spell?

The word Rhayc is misspelled against Rheic, an adjective meaning "Pertaining to, or designating, an acid (commonly called chrysophanic acid) found in rhubarb (Rheum)."

Word contains consecutive vowels 'EI' in between alphabets rh & c is misspelled as 'AY'
Wrong Spelling:  rh-ay-c 
Correct Spelling:  rh-ei-c 
Browse incorrect spellings of Rheic to spell it good.