L-Theanine CAS 3081-61-6
L-Theanine is the amino acid behind the calm, focused feeling associated with green tea, a white, water-soluble crystalline powder sold almost entirely as a high-purity L-form for supplements and functional foods. It supports relaxation without the drowsiness of a sedative and pairs especially well with caffeine, where it softens the jittery edge while attention stays sharp. The powder dissolves clearly and carries a mild savory note, so it works in capsules, gummies, powders and ready-to-drink beverages alike. UATChem supplies food and supplement grade L-theanine by the drum or in smaller foil packs, with HPLC assay, optical identity and the routine contaminant panel reported on the COA.
- CAS: 3081-61-6
- EC Number: 221-379-0
- Synonyms: L-Theanine; N-ethyl-L-glutamine; L-glutamic acid gamma-ethylamide
- Molecular Formula: C₇H₁₄N₂O₃
- Molecular Weight: 174.20
- Appearance: White to off-white crystalline powder, odorless
- Grade: Food and supplement grade, high-purity L-form
- Assay: High L-theanine content by HPLC (per COA)
- Solubility: Freely soluble in water, clear solution
- Taste: Clean, mild; suited to beverages
- Main use: Supplements, relaxation and focus drinks, functional foods
- Packaging: 1 kg/5 kg foil bag; 25 kg fiber drum or carton
About L-Theanine
L-Theanine is a non-protein amino acid first found in tea leaves, Camellia sinensis, and the ingredient behind the calm but alert feeling people link with green tea. It is a white to off-white crystalline powder that dissolves clearly in water with little taste or odor, and trade runs in a high-purity L-form made mainly by fermentation or enzyme and synthesis routes rather than by extracting the small amount present in tea. It is valued for relaxation without sedation and for the way it rounds off caffeine. UATChem supplies food and supplement grade L-theanine to HPLC and amino-acid standards, with assay, optical identity and the contaminant panel on the COA.
Finished Products It Goes Into
Most high-purity L-theanine goes to brands building calm, focus and sleep products:
- Capsules and tablets. Relaxation, stress and sleep formulas, often as a single-ingredient item.
- Powder blends and stick packs. Nootropic and pre-workout calm blends meant to mix with water.
- Gummies and chews. Calm and sleep formats where a clean, neutral taste matters.
- Functional beverages. Relaxation and focus drinks, where a clear water-soluble powder keeps the liquid bright.
- Sports and daily nutrition. Protein, hydration and mood-support products.
The best-known pairing is caffeine, since the two together support focus while theanine takes the edge off the nervous, jittery feel of caffeine alone. For night-time and unwind products it is commonly blended with magnesium, GABA or melatonin, and UATChem also supplies chelated magnesium for the same sleep and relaxation ranges.
Grade and Specifications
Typical profile for high-purity food and supplement grade L-theanine; batch values ship on the COA.
| Parameter | Value |
|---|---|
| Appearance | White to off-white crystalline powder, odorless |
| Assay (HPLC) | High-purity L-form, value on COA |
| Identity and optical rotation | L-form, meets USP or AJI style criteria |
| Solubility | Freely soluble in water, clear solution |
| Taste and odor | Clean and mild, suited to beverages |
| Heavy metals and microbial | Tested, results on COA |
| Standards | Food and supplement grade; USP, EP, AJI or JP on request |
Packing, Documents and Shelf Life
High-purity L-theanine leaves in 1 kg and 5 kg foil bags or 25 kg fiber drums and cartons with a sealed polyethylene liner, and private labeling or stand-up pouch packing can be arranged for regular orders. Each lot ships with a COA showing HPLC assay, L-form identity, heavy metal and microbial results, with food and supplement grade documentation available on request. The powder is stable and non-hazardous; keep it sealed, cool and dry and away from strong light to hold the full shelf life shown on the pack.
Frequently Asked Questions
Q: Is your L-theanine extracted from tea?
A: It is mainly fermented or synthesized, not tea-extracted, because tea holds only a little; the route is shown on the COA.
Q: Does L-theanine contain caffeine?
A: No. The powder is caffeine-free; caffeine is added separately, and theanine softens the jittery edge while focus stays sharp.
Q: Can it be used in foods and beverages?
A: Yes. The food and supplement grade has US GRAS status; novel-food rules differ by country, so confirm local requirements.
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