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(2S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-[4-[(2-methylpropan-2-yl)oxy]phenyl]propanoic acid
Molecular Formula: C28H29NO5
Molecular weight:459.53400

Appearance and properties: white to off-white crystalline powder
Density: 1.218 g/cm3
Boiling point: 658.2ºC at 760 mmHg
Melting point: ~150 °C (dec.)
Flash point: 351.9ºC
Refractive index: -30 ° (C=1, DMF)
Stability: Stable under normal temperatures and pressures.
Storage conditions: 2-8ºC

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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