76080-91-6 DGTV Dansylhydrazide trivaline H-Val-val-val-N2H2-dns L-Valine, N-(N-L-valyl-L-valyl)-, 2-((5-(dimethylamino)-1-naphthalenyl)sulfonyl)hydrazide Trivaline dansyl hydrazide Val-val-val-dansyl hydrazide