An organic example of a triprotic acid is citric acid, which can successively lose three protons to finally form the citrate ion.
ɐn ɔːɹɡˈænɪk ɛɡzˈæmpəl əvə tɹɪpɹˈɑːɾɪk ˈæsɪd ɪz sˈɪtɹɪk ˈæsɪd, wˌɪtʃ kæn səksˈɛsɪvli lˈuːz θɹˈiː pɹˈoʊtɑːnz tə fˈaɪnəli fˈɔːɹm ðə sˈɪtɹeɪt ˈaɪɑːn.