Cacayne or Cacaine: How To spell?

The word Cacayne is misspelled against Cacaine, a noun meaning "The essential principle of cacao; -- now called theobromine."

Word contains consecutive vowels 'AI' in between alphabets cac & ne is misspelled as 'AY'
Wrong Spelling:  cac-ay-ne 
Correct Spelling:  cac-ai-ne 
Explore spell check of Cacaine to spell without errors.

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