Description
The L-theanine powder from Umbrella Labs comes as loose powder, sold by weight. Each batch is tested by LC-MS to 99% purity or higher. It’s $13.99. It’s sold for laboratory research only.
Browse the rest of our nootropic powders for related compounds.
What is L-theanine?
L-theanine is an amino acid found mainly in tea leaves. It’s similar in structure to glutamate but isn’t used to build proteins.
It crosses into the brain.
L-theanine powder specifications
- Compound: L-theanine (Theanine, Theanin, N-Ethyl-L-Glutamine)
- CAS number: 3081-61-6
- Molecular formula: C7H14N2O3
- Molecular weight: 174.2
- Purity: 99% or higher, tested by LC-MS
- Amount: 12g
- Form: Loose powder
- Storage: Keep it refrigerated
- Use: laboratory research only, not for human or veterinary use
What studies say about L-theanine
Small human studies report more alpha brain wave activity and lower stress responses.
It’s also studied with caffeine for attention.
The original papers are on PubMed if you’d like to read them in full.
Tips for measuring L-theanine powder
Buying L-theanine as a powder gives you full control. Weigh out exactly what your protocol calls for, make up your own solutions, or encapsulate it yourself.
For small amounts you’ll want a scale that reads to at least 0.01g, and ideally 0.001g. Our digital scale and micro scoops make it easier to get consistent measurements. Weigh onto clean weighing paper, and close the bag or jar straight after so the powder doesn’t pick up moisture.
Making a solution from L-theanine powder
To make a stock solution, decide on the final volume and concentration first. For 30mL at 10mg/mL you’d weigh 300mg of L-theanine, dissolve it in about 25mL of solvent, then top up to exactly 30mL.
Check the compound’s solubility in your chosen solvent before you start, and try a small test amount first. Store the finished solution in a labelled glass bottle.
How we test L-theanine
Every batch of L-theanine is checked with liquid chromatography-mass spectrometry (LC-MS) before it goes on sale. LC-MS separates a sample into its parts and identifies each one by mass, so it confirms what the compound is and how much of the sample it makes up. The current batch tested at 99% or higher.
Small differences between batches are normal, so write the batch number from the label into your records. If something looks wrong when your order arrives, like discoloured powder or a cloudy solution, set it aside and don’t use it.
How to store L-theanine
Keep it refrigerated. Use a clean, dry scoop each time, and reseal the container straight away. Label anything you decant with the compound, amount and date, and keep it out of reach of children and pets.
Common questions about the L-theanine powder
What can I dissolve L-theanine powder in?
That depends on the compound’s solubility and your protocol. Check the solubility data for your solvent first, and test a small amount before making up a full batch.
What scale do I need?
One that reads to 0.01g at minimum, and 0.001g for very small amounts. Our pocket scale reads to 0.01g.
Is the L-theanine powder in stock?
Yes. Every option on this page is in stock and ready to ship.
More nootropics like L-theanine
If you’re browsing for a study, you might also look at L-tyrosine powder, L-carnitine powder, Laxogenin powder and KW-6356 powder. Our main Nootropics page lists everything in the category.
Buy L-theanine powder from Umbrella Labs
Ordering takes a minute. Add it to your cart and check out. The L-theanine powder is in stock and ready to ship. While you’re here, our lab supplies cover the pipettes, scales and solutions most studies need.
Sold for laboratory research use only. It isn’t for human or veterinary use, and it isn’t a food, drug or cosmetic.
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