Get Factory Fresh DL-Phenylalanine And L-Phenylalanine

Analysis	Description	Test Method
Assay (dry basis)	99.0～101.0%	HPLC
Loss on drying	Not More Than 0.20%	Dryer
Residue on ignition	Not More Than 0.10%	Ph. Eur.
Related substances	Not More Than 0.5%	Ph. Eur.
Endotoxin*	Less Than 6.0 EU/g	Ph. Eur.
State of solution(Transmittance)	Not Less Than 98.0%	Ph. Eur.
PH	6.5~7.5	Ph. Eur.
Specific rotation[α]20D	-33.5～-35.0°	Ph. Eur.
Specific rotation[α]25D	-32.7～-34.7°	Ph. Eur.
Ammonium (NH4)	Not More Than 0.020%	Ph. Eur.
Chloride (Cl)	Not More Than 0.020%	Ph. Eur.
Sulfate (SO4)	Not More Than 0.020%	Ph. Eur.
Iron (Fe)	Not More Than 10 ppm	ICP-MS/AOAC 993.14
Arsenic (As)	< 1 ppm	ICP-MS/AOAC 993.14
Cadmium (Cd)	< 2 ppm	ICP-MS/AOAC 993.14
Heavy metals (Pb)	Not More Than 10 ppm	ICP-MS/AOAC 993.14
Mercury (Hg)	< 0.5 ppm	ICP-MS/AOAC 993.14

Phenylalanine is an essential aromatic amino acid in humans (provided by food), Phenylalanine plays a key role in the biosynthesis of other amino acids and is important in the structure and function of many proteins and enzymes. Phenylalanine is converted to tyrosine, used in the biosynthesis of dopamine and norepinephrine neurotransmitters. The L-form of Phenylalanine is incorporated into proteins, while the D-form acts as a painkiller. Absorption of ultraviolet radiation by Phenylalanine is used to quantify protein amounts. L-phenylalanine is the L-enantiomer of phenylalanine. It has a role as a nutraceutical, a micronutrient, an Escherichia coli metabolite, a Saccharomyces cerevisiae metabolite, a plant metabolite, an algal metabolite, a mouse metabolite, a human xenobiotic metabolite and an EC 3.1.3.1 (alkaline phosphatase) inhibitor. It is an erythrose 4-phosphate/phosphoenolpyruvate family amino acid, a proteinogenic amino acid, a phenylalanine and a L-alpha-amino acid. It is a conjugate base of a L-phenylalaninium. It is a conjugate acid of a L-phenylalaninate. It is an enantiomer of a D-phenylalanine. It is a tautomer of a L-phenylalanine zwitterion.

Total Plate Count	< 3,000 cfu/g	AOAC 990.12
Total Yeast & Mold	< 300 cfu/g	AOAC 997.02
E. Coli	< 10 cfu/g	AOAC 991.14
Coliforms	< 10 cfu/g	AOAC 991.14
Salmonella	Negative	ELFA-AOAC
Staphylococcus	< 10 cfu/g	AOAC 2003.07

The essential amino acid L-phenylalanine (Phe) is needed for the synthesis of proteins, catecholamines, and melanin; it is also an important precursor of the amino acid L-tyrosine (Tyr).

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