Description

L-Phenylalanine CAS NO 63-91-2 is an essential aromatic amino acid and a fundamental building block for proteins and numerous bioactive compounds. Its unique structure makes it a critical precursor in the biosynthesis of key neurotransmitters, flavors, and sweeteners. This high-purity ingredient is indispensable for manufacturers in the pharmaceutical, nutraceutical, and food & beverage industries seeking reliable, specification-grade raw materials.

Application

• Pharmaceutical Synthesis: A key chiral intermediate and starting material for the production of various drugs, including antiviral agents and enzyme inhibitors.
• Nutraceutical & Dietary Supplements: Used in amino acid supplements, protein powders, and products targeting cognitive health and mood support.
• Food & Beverage Additive: Employed as a nutritional fortifier and as a precursor for the artificial sweetener aspartame (L-aspartyl-L-phenylalanine methyl ester).
• Biochemical Research & Cell Culture: An essential component of cell culture media and a reagent in microbiological and enzymatic studies.
• Animal Nutrition: Incorporated into feed formulations to ensure balanced amino acid profiles for livestock and poultry.
• Cosmetic & Personal Care: Used in the formulation of skin-conditioning and hair-care products.

Basic Information

Product Name	L-Phenylalanine
CAS No.	63-91-2
Molecular Formula	C9H11NO2
Molecular Weight	165.19 g/mol
Synonyms	(S)-2-Amino-3-phenylpropanoic acid; (S)-α-Amino-β-phenylpropionic acid; L-α-Amino-β-phenylpropionic acid; L-β-Phenylalanine; Phenylalanine, L-; F; Phe; L-Phe
EINECS	200-568-1

Quality Control

Our L-Phenylalanine is manufactured under strict quality management systems. Each batch is tested to meet rigorous specifications for identity, purity, and safety, aligning with standards such as USP, FCC, and EP where applicable. A comprehensive Certificate of Analysis (COA) documenting all test results is provided with every shipment to ensure full traceability and compliance for our global B2B customers.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Specific Rotation [α]20/D	-33.0° to -35.5°
Loss on Drying	≤ 0.3%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.