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CAS RN: 51987-73-6 | Product Number: B4259

N-(tert-Butoxycarbonyl)-L-phenylalanine Methyl Ester

Purity: >98.0%(HPLC)
  • N-Boc-L-phenylalanine Methyl Ester
  • Boc-Phe-OMe
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Product Number B4259
Purity / Analysis Method >98.0%(HPLC)
Molecular Formula / Molecular Weight C__1__5H__2__1NO__4 = 279.34 
Physical State (20 deg.C) Solid
CAS RN 51987-73-6
Reaxys Registry Number 3061910
PubChem Substance ID 253660284
MDL Number


Appearance White to Almost white powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(with Total Nitrogen) min. 95.0 %
Melting point 37.0 to 41.0 °C
Specific rotation [a]20/D -3.0 to -5.0 deg(C=2, MeOH)
Properties (reference)
Melting Point 39 °C
Specific Rotation -3° (C=2,MeOH)
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws:
Transport Information:
HS Number 2924297099
PubMed Literature

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