Molekula
L-Theanine
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
L-Theanine is a non-proteinogenic amino acid naturally found in tea leaves, known for promoting relaxation and reducing stress without causing drowsiness. It is commonly used in dietary supplements and functional foods. Available with CAS number 3081-61-6, molecular formula C7H14N2O3, and molecular weight 174.20 g/mol. Stored at 2 to 8 °C. Signal word: Warning.
Molekula supplies L-Theanine at 98.0 - 102.0% purity (Titration) in 25 g and 100 g packs, from £102.24 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £85.20 per pack ex VAT · £102.24 inc. VAT
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100 g — £147.70 per pack ex VAT · £177.24 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to Off-white powder |
| Melting Point | 202.0 - 215.0°C |
| Specific rotation | +7.5° to +8.5° |
| Total plate count | ≤ 1000cfu/g |
| Salmonella | Negative |
| pH | 5.0 - 6.0 |
| Chloride (Cl-) | ≤ 0.02% |
| Residue on Ignition | ≤ 0.2% |
| Escherichia coli | Negative |
| Heavy Metals (Pb) | ≤ 10ppm |
| Assay (Titration) | 98.0 - 102.0% |
| Water (KF) | ≤ 2.0% |
| Identification (IR) | Conforms to Reference |
| Mould & Yeast | ≤ 100cfu/g |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Odour | None (no odor) |
| Melting Point | 217 - 218 °C |
| Boiling Point | 214-216 °C |
Source: PubChem CID 439378 (HSDB, Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 90033046 |
| CAS Number | 3081-61-6 |
| IUPAC Name | (2S)-2-amino-5-(ethylamino)-5-oxopentanoic acid |
| EC Number | 221-379-0 |
| Molecular Formula | C7H14N2O3 |
| Molecular Weight | 174.20 |
| Exact Mass | 174.1004 |
| SMILES | CCNC(=O)CC[C@@H](C(=O)O)N |
| InChIKey | DATAGRPVKZEWHA-YFKPBYRVSA-N |
| InChI | InChI=1S/C7H14N2O3/c1-2-9-6(10)4-3-5(8)7(11)12/h5H,2-4,8H2,1H3,(H,9,10)(H,11,12)/t5-/m0/s1 |
| PubChem CID | 439378 |
| REACH Code | Y110 |
| HTS Code | 2924.19.11.50 |
| Tariff Code | 2924190090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H317 May cause an allergic skin reaction
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- (2S)-2-amino-5-(ethylamino)-5-oxopentanoic acid
- (2S)-2-azaniumyl-5-(ethylamino)-5-oxopentanoate
- (S)-2-Amino-5-(ethylamino)-5-oxopentanoic acid
- delta-glutamylethylamide
- L-Glutamic acid-gamma-ethylamide
- N-Ethyl-L-glutamine
- N5-Ethyl-L-glutamine
- Suntheanine
- Theanin
- Theanine
Frequently asked questions
What is L-Theanine used for?
L-Theanine is commonly used in dietary supplements and functional foods to promote relaxation and reduce stress without causing drowsiness.
What is the chemical formula and molecular weight of L-Theanine?
The chemical formula of L-Theanine is C7H14N2O3, and its molecular weight is 174.20 g/mol.
How should L-Theanine be stored?
L-Theanine should be stored at temperatures between 2 to 8 °C to maintain stability and prevent degradation.
What grade of L-Theanine does Molekula supply?
Molekula supplies L-Theanine with an assay (titration) of 98.0 to 102.0%, with specified limits for total plate count, mould and yeast, Salmonella, Escherichia coli and heavy metals (Pb); please contact our sales team regarding suitability for your intended application.
Can Molekula supply L-Theanine in bulk quantities?
Yes, Molekula can supply L-Theanine in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an order of L-Theanine?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
Where can I buy L-Theanine?
Directly from Molekula, which lists L-Theanine in 25 g and 100 g packs from £102.24 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.