234-80-0 AIDS-126561 AIDS126561 NSC116341 [1,2,4]Triazolo[3,4-a]phthalazine s-Triazolo[3,4-a]phthalazine {1,2,4-Triazolo[3,4-a]phthalazine} {s-Triazolo[3,4-a]phthalazine}