1-FD-AA 1-Fluoro-2,4-dinitrophenyl-5-L-ala-NH2 1-Fluoro-2,4-dinitrophenyl-5-alaninamide 95713-52-3 Marfey's reagent N(2)-(5-Fluoro-2,4-dinitrophenyl)alaninamide Propanamide, 2-((5-fluoro-2,4-dinitrophenyl)amino)-, (S)-