ðə mˌɑːdɪfɪkˈeɪʃən bˌʌt nˈiːðɚɹ ɔːɹ ɹɪˈækts wɪð mˈoʊltən bɛnzˈoʊɪk ˈæsɪd lˈiːdɪŋ tə nˌɪɹli tˈoʊɾəl pɹˈoʊtɑːn ɛkstʃˈeɪndʒ ðˈʌs fˈɔːɹmɪŋ ðɛɹ ɪz ɐ lˈɑːt ʌv ˈɪntɹɛst ɪnðə kˈɛmɪkəl ɹɪɐktˈɪvᵻɾi ɐmˌʌŋ ðə θɹˈiː mˌɑːdɪfɪkˈeɪʃənz ʌv .
The  modification (but neither  or ) reacts with molten benzoic acid leading to nearly total  proton exchange thus forming  There is a lot of interest in the chemical reactivity among the three modifications of .