Molekula

L-Phenylalanine - USP CRS

SKU 90036383 CAS 63-91-2 C9H11NO2 MW 165.19 Available on enquiry

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L-Phenylalanine - USP Certified Reference Standard (CRS) is an essential amino acid and key building block for proteins, widely used in pharmaceuticals, nutritional supplements, and metabolic research. Industrially, L-phenylalanine is combined with aspartic acid to manufacture the sweetener aspartame, and it is also used as a flavoring agent and nutritional supplement ingredient. It serves as a reference material for analytical testing in quality control and research applications. CAS 63-91-2 | Molecular formula C9H11NO2 | Molecular weight 165.19 | USP grade | Non-hazardous (no signal word) | Store at ambient conditions. Molekula supplies L-Phenylalanine - USP CRS from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

This substance is available from Molekula on enquiry. Full specification, Safety Data Sheet and Certificate of Analysis documentation are provided with your quotation once our team confirms the grade and pack size you need.

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Overview

SKU: 90036383
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

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-phenylalanine
phenylalanine

Literature values

Published physical properties of the substance, not batch specifications.

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)

See all 2 other grades of CAS 63-91-2 →

Frequently asked questions

What is L-Phenylalanine USP CRS used for?

L-Phenylalanine USP CRS is primarily used as a chemical reference standard for analytical testing, including HPLC and GC methods, to ensure accuracy in pharmaceutical and biochemical applications.

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 USP CRS be stored?

Store at **ambient temperature** in a dry, well-ventilated area, away from direct sunlight and moisture.

What grade of L-Phenylalanine does Molekula supply?

Molekula supplies **USP CRS (Chemical Reference Standard)** grade, suitable for high-purity analytical applications.

Can Molekula supply L-Phenylalanine USP CRS in bulk quantities?

Yes, Molekula can provide L-Phenylalanine USP CRS in bulk, with quantities tailored to your requirements—please contact us for pricing and availability.

What documentation comes with an order of L-Phenylalanine USP CRS?

Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and a **batch-specific documentation** traceable to the USP reference standard.

Related products

Molekula has supplied fine chemicals and biochemicals since 1999, and its facilities are ISO 9001:2015 and ISO 14001:2015 certified. Every dispatched batch is logged with a batch number and matched to a Certificate of Analysis, and Safety Data Sheets are available in five languages.