Molekula
L-Phenylalanine
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
L-Phenylalanine is an essential amino acid used in protein synthesis and as a precursor for neurotransmitters like dopamine and norepinephrine. It is also used in food and pharmaceutical applications as a nutritional supplement. CAS: 63-91-2, Molecular formula: C9H11NO2, Molecular weight: 165.19, Storage: Ambient, Signal word: None. Molekula supplies L-Phenylalanine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
100 g — $43.60 per pack
-
1 kg — $206.90 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Water | Report |
| Specific rotation | -20.4 to -35.2° |
| Heavy metals | ≤ 0.002% |
| pH | 5.4 - 6 |
| Loss on Drying | ≤ 0.40% |
| Assay | 98.5 - 101.5% |
| Residue on Ignition | ≤ 0.10% |
| Lead (Pb) | ≤ 10mg/kg |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Prisms form water |
| Odour | Slight |
| Melting Point | 283 °C decomposes |
| Boiling Point | 295 °C at 760 mmHg (sublimes) |
| Water Solubility | 26.4 g/L at 25 °C |
| Solubility (other solvents) | Soluble in water; Slightly soluble in dilute mineral acid and alkali hydroxide solutions |
| Vapour Pressure | 0.00000005 mmHg |
| pKa | pKa = 1.24 (at 25 °C) |
| log P (octanol/water) | -1.38 |
Source: PubChem CID 6140 (HSDB, CAMEO Chemicals, Joint FAO/WHO Expert Committee on Food Additives (JECFA), Haz-Map, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 14133876 |
| CAS Number | 63-91-2 |
| IUPAC Name | (2S)-2-amino-3-phenylpropanoic acid |
| EC Number | 200-568-1 |
| Molecular Formula | C9H11NO2 |
| Molecular Weight | 165.19 |
| Exact Mass | 165.079 |
| SMILES | C1=CC=C(C=C1)C[C@@H](C(=O)O)N |
| InChIKey | COLNVLDHVKWLRT-QMMMGPOBSA-N |
| InChI | InChI=1S/C9H11NO2/c10-8(9(11)12)6-7-4-2-1-3-5-7/h1-5,8H,6,10H2,(H,11,12)/t8-/m0/s1 |
| PubChem CID | 6140 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| Tariff Code | 29224985 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P410 Protect from sunlight
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (2S)-2-amino-3-phenylpropanoic acid
- (S)-2-Amino-3-phenylpropanoic acid
- (S)-2-Amino-3-phenylpropionic acid
- (S)-Phenylalanine
- 3-Phenyl-L-alanine
- 3-Phenylalanine
- Antibiotic FN 1636
- beta-Phenyl-L-alanine
- L-Alanine, phenyl-
- phenylalanine
Frequently asked questions
What is L-Phenylalanine used for?
L-Phenylalanine is used as a nutritional supplement, a precursor in the synthesis of neurotransmitters, and in the production of artificial sweeteners like aspartame.
What is the chemical formula and molecular weight of L-Phenylalanine?
The chemical formula is C9H11NO2 and the molecular weight is 165.19 g/mol.
How should L-Phenylalanine be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of L-Phenylalanine does Molekula supply?
Molekula supplies L-Phenylalanine in reagent grade.
Can Molekula supply L-Phenylalanine in bulk?
Yes, Molekula can supply L-Phenylalanine in bulk quantities upon request.
What documentation comes with an order of L-Phenylalanine?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS).
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.