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Applications: Applicationd in peptide synthesis and used as amino acid protection monomer.
| Items of Analysis | Standard of Analysis | Test Results |
| Appearance | White to off-white powder | White powder |
| Optical rotation | -29.0±3.0°(C=1, in MDF) | -28.2° |
| Solubility | 1g in 10ml DMF clearly soluble | Clearly soluble |
| Melting point | 148.0-152.0℃ | 148.8-150.8℃ |
| Moisture | ≤1.0% | 0.10% |
| Loss on drying | ≤0.5% | 0.03% |
| Assay free amino acid | ≤0.2% | Conform |
| Purity | ≥99.5% | 99.76% |
| Max single unknown impurity | ≤0.2% | 0.03% |
| Fmoc-Osu | ≤0.1% | 0.01% |
| Fmoc-β-Ala-OH | ≤0.1% | 0.01% |
| Fmoc-Tyr-OH | ≤0.1% | 0.08% |
| Fmoc-β-Ala-Tyr(tBu)-OH | ≤0.1% | 0.01% |
| Fmoc-Tyr(tBu)-Tyr(tBu)-OH | ≤0.1% | 0.01% |
| HOSU | ≤0.1% | ND |
| Fmoc-OH | ≤0.1% | 0.01% |
| H-Tyr(tBu)-OH | ≤0.1% | ND |
| Enantiomeric purity | ≤0.1% | ND |
| Assay | 98.5-101.0% | 100.19% |
| Residual solvent | ≤1.0% | 0.04% |
| Ethyl acetate | ≤0.5% | 0.02% |
| EtOH | ≤0.5% | ND |
| MeOH | ≤0.3% | ND |
| Acetate | ≤0.02% | ND |
| Conclusion | Conforms to Factory Standard | |
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