133648-13-2 L-Lysine, N2-(4-(((2-amino-1,4,7,8-tetrahydro-4-oxo-6-pteridinyl)methyl)amino)benzoyl)-N6-(((3',6'-dihydroxy-3-oxospiro(isobenzofuran-1(3H),9'-(9H)xanthen)-5-yl)amino)thioxomethyl)- N(alpha)-Pteroyl-N(epsilon)-(4'-fluoresceinthiocarbamoyl)lysine N2-(4-(((2-Amino-1,4,7,8-tetrahydro-4-oxo-6-pteridinyl)methyl)amino)benzoyl)-N6-(((3',6'-dihydroxy-3-oxospiro(isobenzofuran-1(3H),9'-(9H)xanthen)-5-yl)amino)thioxomethyl)-L-lysine Nnftcl