What are some nine letter words with 5th letter N and 7th letter O and 8th letter I and 9th letter N?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern ----N-OIN. That is, nine letter words with 5th letter N and 7th letter O and 8th letter I and 9th letter N. In alphabetical order, they are:

allantoin

hydantoin