L-Phenylalanine ≥99%, white powder

Supplier: MP Biomedicals

Synonyms: H-L-Phe-OH, Phenylalanine, H-Phe-OH, L-α-Phenylalanine, (S)-(-)-Phenylalanine, 3-Phenyl-L-alanine, 3-Phenyl-L(-)-alanine

0210262383 0210262390 0210262391 0210262325 0210262380
ICNA0210262383EA 434 SGD
ICNA0210262383 ICNA0210262390 ICNA0210262391 ICNA0210262325 ICNA0210262380
L-Phenylalanine ≥99%, white powder
L-α-Phenylalanine

L-Phenylalanine is one of the 20 amino acids. It is an essential amino acid. It contains an aromatic side chain, which contributes to ultraviolet absorbance and fluorescence properties.


L-Phenylalanine is used in the manufacture of food and drink products and sold as a nutritional supplement for its reputed analgesic and antidepressant effects. It is a direct precursor to the neuromodulator phenylethylamine, a commonly used dietary supplement.


L-Phenylalanine is used in the manufacture of food and drink products and sold as a nutritional supplement for its reputed analgesic and antidepressant effects. It is a direct precursor to the neuromodulator phenylethylamine, a commonly used dietary supplement.


Soluble in water, hydrochloric acid (50 mg/ml-clear, colorless solution), aqueous (20 mg/ml-clear, colorless solution; powder may need to be ground slightly with a mortar and pestle before solubilization); very slighly soluble in methanol and ethanol.

Formula: C₉H₁₁NO₂
MW: 165,19 g/mol
Boiling Pt: 313 °C (1013 hPa)
Melting Pt: 270…275 °C (lit.)
Density: 0,754 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00064227
CAS Number: 63-91-2
EINECS: 200-568-1
Merck Index: 14,07271

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Specification Test Results

Identity Test Passes
Purity ≥99%
FTIR Conforms to Standard
UV/VIS: l max (water) 257 ± 3 nm 257.3 nm
Optical Rotation (c=2, water) -35° ± 4°

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