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L-Theanine

L-Theanine structure

CAS No:
3081-61-6
Formula:
C7H14N2O3
Chemical Name:
L-Theanine
Synonyms:
L-Glutamine,N-ethyl-;Glutamine,N-ethyl-,L-;N-Ethyl-L-glutamine;L-Theanine;Theanine;Theanin;Suntheanine;NSC 21308;Nγ-Ethyl-L-glutamine;Suntheanine CG 100;(2S)-2-Amino-4-(ethylcarbamoyl)butanoic acid;(2S)-2-Azaniumyl-5-(ethylamino)-5-oxopentanoate;(S)-2-Amino-5-(ethylamino)-5-oxopentanoic acid
Categories:
Cosmetic Ingredient > Skin Conditioning

Description

L-Theanine (L-Glutamic Acid γ-ethyl amide）is a non-protein amino acid contained in green tea leaves, which blocks the binding of L-glutamic acid to glutamate receptors in the brain, and with neuroprotective and anti-oxidative activities. L-Theanine causes anti-stress effects via the inhibition of cortical neuron excitation by oral intake[1][2][3].

L-Theanine Basic Attributes

Molecular Weight：

174.19800

Exact Mass：

174.20

EC Number：

221-379-0

NSC Number：

21308

HScode：

2924199090

Characteristics

PSA：

92.42000

XLogP3：

-3.6

Appearance：

Solid

Density：

1.171 g/cm3

Melting Point：

217-218 °C (decomp)

Boiling Point：

427.1ºC at 760 mmHg

Flash Point：

212.1ºC

Refractive Index：

8 ° (C=5, H2O)

Water Solubility：

Insoluble in ethanol and ether

Storage Conditions：

Store at 0-5ºC

Vapor Pressure：

5.0X10-8 mm Hg at 25 deg C (est)

Odor：

None (no odor)

Taste：

Astringent, sweet

PH：

pH of 5-6 (1% solution)

Safety Information

Transport codes：

NONH for all modes of transport

hazard class code：

R43

safety instructions：

S28-S36/37

Marks：

Stability/Shelf Life：

Product is considered stable and hazardous polymerization will not occur.

Precautionary statement(s)：

P280

Hazard Statements：

H317

L-Theanine Use and Manufacturing

A non-protein amino acid mainly found naturally in the green tea plant. It may have activity in modulating the metabolism of cancer chemotherapeutics agents.Used as a food additive.The sedative effect when added to food, the flavor improvement effect of L-theanine, strengthens immunity, lowers blood pressure, improves the brain, promotes the brain's learning and memory function, and effectively enhances the liver's detoxification function

Computed Properties

Molecular Weight:174.20
XLogP3:-3.6
Hydrogen Bond Donor Count:3
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:5
Exact Mass:174.10044231
Monoisotopic Mass:174.10044231
Topological Polar Surface Area:92.4
Heavy Atom Count:12
Complexity:170
Undefined Atom Stereocenter Count:1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Ethylamine

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