Description
Our L-isoleucine capsules is L-isoleucine supplied as pre-filled capsules. Each batch is tested by LC-MS to 99% purity or higher. It’s $15.95. It’s sold for laboratory research only.
Prefer a different format? We also stock L-isoleucine powder. See all amino acid capsules for more options in this format.
What is L-isoleucine?
L-isoleucine is one of the three branched-chain amino acids (BCAAs), along with leucine and valine.
It’s sold here as a pharmaceutical-grade research powder or in capsules.
L-isoleucine capsules specifications
- Compound: L-isoleucine ((2S, 3S)-2-Amino-3-methylpentanoic acid)
- CAS number: 73-32-5
- Molecular formula: C6H13NO2
- Molecular weight: 131.17
- Purity: 99% or higher, tested by LC-MS
- Amount: 240 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-isoleucine
Isoleucine is used in muscle protein synthesis and glucose uptake studies.
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-isoleucine capsule
Each capsule holds a fixed, measured amount of L-isoleucine (500mg), so there’s nothing to weigh out. For studies that need the same amount every time, that’s the main advantage over loose powder.
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-isoleucine 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 240 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.
Purity testing for L-isoleucine
We test each batch of L-isoleucine by LC-MS, which pairs liquid chromatography with mass spectrometry. The chromatography splits the sample into its components and the mass spectrometer identifies them, which tells you both identity and purity. This batch came in 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.
Storage and handling
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-isoleucine capsules
How many capsules are in a bottle?
See the amount listed above (240 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-isoleucine capsules in stock?
Yes. Every option on this page is in stock and ready to ship.
Related amino acids
If you’re browsing for a study, you might also look at L-histidine capsules, L-leucine capsules, L-lysine capsules and L-methionine capsules. Our main Amino Acids and Probiotics page lists everything in the category.
Buy L-isoleucine capsules from Umbrella Labs
Ready when you are. Add it to your cart and check out. The L-isoleucine capsules is in stock and ready to ship. If you’re stocking up, take a look at amino acid capsules too.
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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