2-AA (2-aminobenzoic acid) is considered by many to be a superior replacement for 2-AB in most types of complex glycan analysis. 2-AA labeling is reported to have a higher fluorescence and gives higher labelling efficiencies than 2-AB. • The kit contains two sets of the following reagents (15 samples per kit) supplied in glass ampoules sealed under pure nitrogen: 2-aminobenzoic acid (2-AA dye) - Dimethyl sulfoxide (DMSO) - Acetic acid - Sodium cyanoborohydride • Number of Samples: Each kit contains reagents to label up to 30 analytical samples per kit. • Dye purity: >99% by HPLC • Molecular weight: 137 • Lambda-ex: 320 nm • Lambda-em: 420 nm • Amount of Sample: From 25 pmol up to 25 nmol glycans per sample. • Suitable Samples: Any purified glycans with free reducing termini can be labeled. • Structural Integrity: No detectable (< 2 mole per cent) loss of sialic acid, fucose, sulfate, or phosphate. • Labeling Efficiency Typically: > 85 % (dependent on sample).