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Name:L-Theanine

Synonyms:N-Ethyl-L-glutamine; L-Glutamic acid gamma-(ethylamide)

Molecular Structure:

Molecular Formula:C₇H₁₄N₂O₃

Molecular Weight:174.20

CAS Registry Number:3081-61-6

EINECS:221-379-0

Theanine (pronounced /ˌtea-anene/) (gamma-glutamylethylamide, or 5-N-ethyl-glutamine) is an glutamic acid analog or amino acid derivative commonly found in tea (infusions of Camellia sinensis), and also in the basidiomycete mushroom Boletus badius. In 1950 the Tea laboratory of Kyoto successfully separated theanine from Gyokuro leaf, which has the highest theanine content among all teas. Theanine is an analog to glutamine and glutamate, and can cross the blood-brain barrier. It is sold in the US as a dietary supplement and is FDA confirmed as GRAS. The Japanese Ministry of Health and Welfare approved the use of L-theanine in 1964

Specifications:

Items	Specifications
Appearance	White crystalline powder
Clarity of Solution	Conforms
Specific Rotation	+7.7~+8.5．
Residue on Ignition	0.2% Max
Heavy Metals	10ppm Max
Arsenic	1ppm Max
Chloride	0.02% Max
PH	5.0-6.0
Loss on Drying	0.5% Max
Assay(By HPLC)	99.0% Min
Salmonella	Negative
E.coli	Negative
Staphylococcus	Negative
Mold & Yeast	100cfu/g Max
Total Plate	1000cfu/g Max