Description
The L-threonine capsules from Umbrella Labs gives you L-threonine as pre-filled capsules. Each batch is tested by LC-MS to 99% purity or higher. It’s $20.97. It’s sold for laboratory research only.
It’s also available as L-threonine powder. Browse the rest of our amino acid capsules for related compounds.
What is L-threonine?
L-threonine is an essential amino acid with a hydroxyl group.
It’s sold here as a pharmaceutical-grade research powder or in capsules.
L-threonine capsules specifications
- Compound: L-threonine ((2S, 3R)-2-Amino-3-hydroxybutyric acid)
- CAS number: 72-19-5
- Molecular formula: C4H9NO3
- Molecular weight: 119.12
- Purity: 99% or higher, tested by LC-MS
- Amount: 365 x 500mg
- Form: Pre-filled capsules
- Storage: Keep it in a cool, dry place away from direct sunlight
- Use: laboratory research only, not for human or veterinary use
Research on L-threonine
Threonine is a major part of gut mucin proteins.
It’s a standard reagent, so it’s useful as a control or a defined input in nutrition and metabolism studies.
Search PubMed for the full studies. We stick to what’s been published.
What’s in each L-threonine capsule
Capsules take the weighing out of the job. Every capsule contains the same amount of L-threonine, 500mg, filled and counted before the bottle is sealed.
If you need amounts that don’t match the capsule size, the powder is more flexible, because you can weigh exactly what each sample needs and make up your own solutions or capsules at whatever strength your protocol calls for. Capsules are best for repeat work where the amount doesn’t change. Keep the lid tight, since moisture is the main thing that degrades capsule contents.
Planning a study with L-threonine capsules
Work out how many capsules your study needs before you order. Multiply the number of subjects by the number of administrations per subject, then add a few spare for losses. With 365 capsules in a bottle, that tells you straight away how many bottles to buy.
Keep all the capsules for one study from the same batch where you can. It removes batch-to-batch variation from your results.
How we test L-threonine
Every batch of L-threonine 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-threonine
Keep it in a cool, dry place away from direct sunlight. Keep the desiccant in the bottle and the lid closed tight. 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-threonine capsules
How many capsules are in a bottle?
See the amount listed above (365 x 500mg). Every one is filled to the same amount.
Can I open the capsules?
Yes, if your protocol calls for it. Do it on clean weighing paper so you don’t lose any powder.
Is the L-threonine capsules in stock?
Yes. Every option on this page is in stock and ready to ship.
Other amino acids you might need
If you’re browsing for a study, you might also look at L-histidine capsules, L-isoleucine capsules, L-leucine capsules and L-lysine capsules. Our main Amino Acids and Probiotics page lists everything in the category.
Buy L-threonine capsules from Umbrella Labs
Ordering takes a minute. Add it to your cart and check out. The L-threonine capsules 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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