Thebeyne or Thebaine: How To spell?

The word Thebeyne is misspelled against Thebaine, a noun meaning "A poisonous alkaloid, C19H21NO3, found in opium in small quantities, having a sharp, astringent taste, and a tetanic action resembling that of strychnine."

Word contains consecutive vowels 'AI' in between alphabets theb & ne is misspelled as 'EY'
Wrong Spelling:  theb-ey-ne 
Correct Spelling:  theb-ai-ne 
Explore spell check of Thebaine to spell without errors.

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