Secnidazole- 13 C 2 , 15 N 2 is the 13 C 2 , 15 N 2 labeled Secnidazole. Secnidazole (RP-14539;PM-185184) is an orally active azole antibiotic with a longer half-life than metronidazole. Secnidazole is against the vaginosis-associated bacteria and has the potential for bacterial vaginosis research.