Description
FMOC-L-Aspartic acid beta-tert-butyl ester CAS 71989-14-5
|
Items |
Specification |
Results |
|
|
Appearance |
White to off-white powder |
Conforms |
|
|
Purity(HPLC) |
≥99% |
99.85% |
|
|
Optical Purity |
≤0.3% D-enantiomer |
0.1508% |
|
|
TLC |
≥98% |
>98% |
|
|
Element analysis(C、H、N) |
≤5.0% |
<5.0% |
|
|
Melting Point |
145.0-160.0 ℃ |
147.5-149.5℃ |
|
|
Specific Rotation[α]D20 |
-24°±2.5°(C=1 in DMF) |
-23.9°(C=1 in DMF) |
|
|
Clarity of solution |
0.3 gram in 2ml DMF clear solution |
Complies |
|
|
Kaiser Test |
<0.05% |
<0.05% |
|
|
Water Content(K.F.) |
≤1.0% |
0.057% |
|
|
Loss on drying |
≤1.0%(70℃,2h) |
0.160% |
|
|
IR Spectrum |
In accordance with the structure |
Complies |
|
|
NMR Spectrum |
In accordance with the structure |
Complies |
|
|
NMR Spectrum |
In accordance with the structure |
Complies |
|
|
Conclusion |
Meet the requirement of house standard. |
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