Product Name: H-Asp(OtBu)-OH 

CAS No.: 3057-74-7 

Store at: Cool dry place(<25oC) 

Molecular Formula: C8H15NO4 

Molecular Weight: 189.2 

Appearance White powder 

Purity(HPLC) ≥98% 

Specific Rotation[a]20

D -9o±2o(C=2 in MeOH/H2O=4/1) 

TLC ≥98% 

Element analysis(C、H、N) ≤5.0% 

Clarity of solution  0.3 gram in 2ml TFA clear solution

Water Content(K.F.)  ≤5.0% 

Loss on drying  ≤3.0%(70oC,2h)