N-Vinyl-2-pyrrolidone, 99%, stabilized with NaOH..
N-[(2S,3R)-3-Amino-2-hydroxy-4-phenylbutyryl]-L-leucine, 97%..
N-[(S)-(+)-1-Ethoxycarbonyl-3-phenylpropyl]-L-alanine, 97%..
N-[3-(Trimethoxysilyl)propyl]ethylenediamine, 97%..
NADPH tetrasodium salt hydrate, 96%, extra pure..