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N-Carbobenzyloxy-L-aspartic acid Cbz-L-aspartic acid CAS:1152-61-0
Product name |
N-Carbobenzyloxy-L-aspartic acid |
Alias |
N-cbz-L-aspartic acid crystalline; Z-L-Aspartic acid; N-Benzyloxycarbonyl-L-aspartic acid~Z-Asp-OH; Z-Asp-OH; N-CBZ-L-Aspartic acid N-Carbobenzyloxy-L-aspartic acid; N-Carbobenzoxy-L-aspatic acid; CBZ-L-Aspartic Acid-OH; N-Cbz-L-aspartic acid; N-Cbz-L-Asp-OH; NALPHA-Benzyloxycarbonyl-L-aspartic acid; z-Asp; N-[(benzyloxy)carbonyl]aspartic acid; N-[(benzyloxy)carbonyl]-L-aspartic acid; N-[(benzyloxy)carbonyl]-D-aspartic acid; (2S)-2-{[(benzyloxy)carbonyl]amino}butanedioate; Cbz-L-aspartic acid |
CAS NO |
1152-61-0 |
EINECS No. |
214-568-4 |
Molecular formula |
C12H11NO6 |
Molecular weight |
265.2199 |
Structural formula |
|
Product description |
White crystal. Melting point: 115~118℃; specific rotation: [α]54620 +10.0°±0.5°, [α]D20 +8.8°±0.5°(C=2, in acetic acid); irritating.Melting point: 117-119 °C(lit.) ; specific rotation: 10.5 º (c=1,AcOH); refractive index: 9.5 °(C=7, AcOH) |
Uses |
In polypeptide synthesis. |
Item |
Standard |
Results |
Appearance |
A white to off-white powder |
Conforms |
differentiate |
To match with standard |
Consistent |
Transmittance |
≥98% |
Conforms |
Specific rotation(On dried basis) |
+33.0°~+35.0° |
+33.75° |
Loss on drying |
≤0.2% |
0.10% |
Chloride |
≤0.02% |
<0.02% |
Ammonium(NH4) |
≤0.02% |
<0.02% |
Iron(Fe) |
≤0.001% |
<0.001% |
Sulfate(So4) |
≤0.02% |
<0.02% |
Other amino acids |
Passed |
Conforms |
Residue on igaition |
≤0.10% |
0.05% |
Heavy metals(Pb) |
≤10ppm |
<10ppm |
PH |
5.4—6.0 |
5.72 |
Assay |
98.5%~101.5% |
99.43% |
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