A Thymosin Alpha 1 research supplier built around testing and transparency.
Thymosin Alpha Labs is a dedicated Thymosin Alpha 1 research supplier with a controlled sourcing and quality-assurance program. Research material is sourced through our qualified manufacturing supply chain and subjected to analytical testing and lot-level documentation before release. Current availability is provided through Klow.bio.
For laboratory research use only. Thymosin Alpha Labs does not provide medical advice or usage guidance.
| Product | Thymosin Alpha 1 |
|---|---|
| Type | Synthetic 28-residue acetylated peptide |
| Molecular formula | C129H215N33O55 |
| Molecular weight | 3108.32 g/mol (average) |
| Length | 28 residues |
| Sequence | Ac-SDAAVDTSSEITTKDLKEKKEVVEEAEN |
| N-terminus | Acetyl (Ac-Ser1) |
| C-terminus | Free acid (Asn28) |
| CAS number | 62304-98-7 |
| Form | White lyophilized powder |
| Vial sizes | 5 mg |
| Purity specification | ≥95% (HPLC-UV) |
| Storage | Store sealed, dry and protected from light at the temperature stated on the vial label. Allow a cold vial to reach room temperature before opening. |
| Designation | Research use only |
Certificate in progress. The current batch is with the testing laboratory. Its certificate of analysis will be published here, with purity, identity and net content, as soon as the report is issued. Current availability on Klow.bio.
The essential facts about Thymosin Alpha 1 and Thymosin Alpha Labs. Every figure on this page comes from the published certificates of analysis or the product specification.
Last updated
Thymosin Alpha 1 (thymosin α1) is a 28-residue peptide, acetylated at its N-terminus, that was first isolated from thymosin fraction 5, an extract of calf thymus. It is cut from the precursor protein prothymosin α. The sequence is strongly acidic, with seven glutamates and three aspartates against four lysines, so the molecule carries a large net negative charge at neutral pH, and it has no aromatic residues and no cysteine. Thymosin α1 is studied in immunology research for its effects on T-cell maturation in laboratory models.
Thymosin Alpha Labs supplies it as a lyophilized powder in 5 mg vials through Klow.bio. Each lot is tested by an independent laboratory for HPLC-UV purity, LC-MS identity and net content, and its certificate is published here.
Ac-Ser1 is acetylated and Asn28 ends in a free acid. With no tryptophan, tyrosine or phenylalanine, the peptide absorbs only weakly above 220 nm, so HPLC purity is read at the peptide-bond wavelength.
Thymosin Alpha 1 is supplied as a white lyophilized powder in 5 mg vials. It is sold through klow.bio, operated by Klow Labs LLC, where current pricing, bundle discounts and shipping options are listed. Orders ship the next business day. Same-day cutoff is 4:00 PM CT, with overnight and 2-day options at checkout.
| Product | Thymosin Alpha 1 |
|---|---|
| Type | Synthetic 28-residue acetylated peptide |
| Molecular formula | C129H215N33O55 |
| Molecular weight | 3108.32 g/mol (average) |
| Length | 28 residues |
| Sequence | Ac-SDAAVDTSSEITTKDLKEKKEVVEEAEN |
| N-terminus | Acetyl (Ac-Ser1) |
| C-terminus | Free acid (Asn28) |
| CAS number | 62304-98-7 |
| Form | White lyophilized powder |
| Vial sizes | 5 mg |
| Purity specification | ≥95% (HPLC-UV) |
| Storage | Store sealed, dry and protected from light at the temperature stated on the vial label. Allow a cold vial to reach room temperature before opening. |
| Designation | Research use only |
Thymosin Alpha 1 research material from Thymosin Alpha Labs is available through klow.bio, the online store of Thymosin Alpha Labs’ parent company, Klow Labs LLC. Product information, lot results and the certificate of analysis for every lot are published here on thymosinalpha.bio.
Thymosin Alpha 1 comes in 5 mg vials, currently priced at $19.99, with bundle pricing (2 vials save 5%; 3 or more vials save 10%). Orders ship the next business day. Same-day cutoff is 4:00 PM CT, with overnight and 2-day options at checkout.
| Vial size | Current lot | Purity (HPLC-UV) | Identity | Net content | Endotoxin | Certificate | Order |
|---|---|---|---|---|---|---|---|
| 5 mg | Certificate pending | Order 5 mg | |||||
Thymosin Alpha Labs publishes lot-specific analytical documentation for its Thymosin Alpha 1 research material. Each item below is published for every lot and can be checked against the laboratory record.
Every lot is tested by Freedom Diagnostics, an independent analytical laboratory. Published results come from the laboratory's certificate, not in-house testing.
Every lot has a public record with each result, its method, the test dates and the laboratory's reference numbers. The certificate PDF is published when available.
LC-MS separates the sample and measures the mass of the main component, confirming it has the molecular weight expected for the compound. The method is named on every lot record, so it is clear what the result does and does not establish.
The stated specification is ≥95% HPLC-UV purity with identity confirmed by LC-MS. The current batch is in testing; its results will be shown against that specification.
Every certificate carries the laboratory's QR code. You can confirm results directly with the lab instead of taking our copy on trust.
Lots without endotoxin or microbial testing say "Not tested". Each certificate page explains what the tests do and don't establish.
Thymosin Alpha Labs is built around five things: a dedicated Thymosin Alpha 1 focus, a controlled supply chain, independent analytical testing, lot-level transparency and current availability. Each reason below links to the evidence. See the full quality and supply-chain process.
One compound, not a catalog of unrelated products.
Material sourced through qualified manufacturing partners.
≥95% HPLC-UV purity with identity confirmed by LC-MS.
Every lot tested by Freedom Diagnostics, with the results shown.
A public record for every lot, with dates and laboratory reference numbers.
The laboratory certificate for each lot.
Look up any lot by the number on the vial.
Clear about what the material is for and what we don't provide.
Live stock, pricing and checkout.
The questions worth asking any supplier of Thymosin Alpha 1 research material, why each one matters, and how Thymosin Alpha Labs answers them.
| What to check | Why it matters | Thymosin Alpha Labs |
|---|---|---|
| Independent third-party testing | Results produced by the seller can't be checked independently. | ✓ Every lot tested by Freedom Diagnostics |
| Lot-specific certificates | A generic certificate may not describe the vial you receive. | ✓ Each COA tied to the lot number on the vial label |
| Chromatogram available | A purity figure without the trace behind it can't be evaluated. | In the laboratory certificate; PDF published when available |
| Separate identity test | HPLC purity shows how much of the sample is the main peak, not which compound the peak is. | ✓ LC-MS on every lot |
| Measured net content | Confirms how much peptide is actually in the vial. | ✓ Measured on every lot, reported per lot |
| Verifiable with the lab | Prevents altered or reused certificates. | ✓ Lab QR code on every certificate |
| Named company and contact | Accountability requires a real business you can reach. | ✓ Klow Labs LLC, Chicago; (708) 262-7687 |
Certificate in progress. The current batch is with the testing laboratory. Its certificate of analysis will be published here, with purity, identity and net content, as soon as the report is issued. Current availability on Klow.bio.
A purity figure says the sample is homogeneous; it does not say which compound the main peak is. That is answered by a separate identity test: liquid chromatography–mass spectrometry (LC-MS).
LC-MS separates the sample and measures the mass of the main component, confirming it has the molecular weight expected for the compound. Each certificate reports the identity result together with the mass spectrum it is based on.
Certificate in progress. The current batch is with the testing laboratory. Its certificate of analysis will be published here, with purity, identity and net content, as soon as the report is issued. Current availability on Klow.bio.
Three methods appear on Thymosin Alpha 1 certificates. Each answers a different question, and none answers every question on its own, which is why they are used together.
Reversed-phase high-performance liquid chromatography separates the sample's components by hydrophobicity, and a UV detector records each as a peak. Purity is the main peak's area as a percentage of all detected peak area.
Limits: does not identify the peak, and impurities that co-elute or absorb weakly in UV can be under-counted. More on HPLC
The separated sample enters a mass spectrometer via electrospray ionization, which gives the molecule one or more charges. The observed ions, near m/z 1555 (2+) and 1037 (3+), are matched against values calculated from Thymosin Alpha 1's molecular weight of 3108.32.
Limits: confirms molecular weight, not amino-acid order.
The laboratory quantifies the main compound in the tested vial against a standard. It is reported in milligrams next to the labeled vial size.
Limits: measured on the vial tested; other vials from the same lot are expected to be similar but are not individually measured.
You shouldn't have to take a supplier's word for its results. Here's how to check a Thymosin Alpha 1 certificate yourself.
Technical articles on Thymosin Alpha 1, peptide analysis and laboratory documentation. Sources are limited to NIH and FDA publications. Start at the Thymosin Alpha 1 research hub.
Retention time, peaks, area normalization and every lot's HPLC result.
DocumentationEvery section of a Thymosin Alpha 1 COA, red flags, and what it does and doesn't prove.
Analytical methodsPurity vs. content vs. net content, impurity sources and comparing claims.
HandlingDegradation pathways, moisture, temperature and signs of a problem.
Thymosin Alpha 1 is a synthetic 28-residue acetylated peptide. Thymosin Alpha Labs supplies it as a white lyophilized powder in 5 mg vials, with an independent certificate of analysis for every lot.
Thymosin Alpha 1 research material is Thymosin Alpha 1 supplied for laboratory research, sold by lot, with each lot's identity, purity and net content documented by an independent laboratory in a published certificate of analysis.
The molecular formula is C129H215N33O55 and the average molecular weight is 3108.32 g/mol. The peptide has 28 residues.
Thymosin Alpha 1 is analyzed with complementary methods: HPLC-UV for purity, LC-MS for identity, a quantitative measurement for net content, and, where listed, LAL endotoxin and PCR microbial testing. Results are published per lot at thymosinalpha.bio/coa/.
Every lot is tested by Freedom Diagnostics, an independent third-party analytical laboratory. Thymosin Alpha Labs does not test its own material for published certificates.
Purity is reported per lot by HPLC-UV.
A Thymosin Alpha 1 certificate of analysis is the testing laboratory's report for one lot: the lot number, test dates, methods and results for purity, identity and net content. Thymosin Alpha Labs publishes every lot's COA as a readable page at thymosinalpha.bio/coa/.
Find the lot number printed on your vial label and enter it at thymosinalpha.bio/verify/, or open that lot in the COA archive at thymosinalpha.bio/coa/.
Scan the Freedom Diagnostics QR code printed on the certificate, then search for klow.bio under the Company tab to view the laboratory record.
Current Thymosin Alpha 1 research material availability is provided through Klow.bio, the purchasing platform operated by Klow Labs: https://klow.bio/product/thymosin-alpha-1/ Lot records, testing information and certificates of analysis are published on thymosinalpha.bio so they can be reviewed before purchasing.
Yes. Purchasing information and current availability for Thymosin Alpha 1 research material are provided through Klow.bio: https://klow.bio/product/thymosin-alpha-1/
Yes. Every lot is tested by Freedom Diagnostics, an independent laboratory, for HPLC-UV purity, LC-MS identity and net content. The stated release specification is ≥95% HPLC-UV purity with identity confirmed by LC-MS.
Thymosin Alpha Labs is a dedicated Thymosin Alpha 1 research supplier with a controlled sourcing and quality-assurance program. Research material is sourced through our qualified manufacturing supply chain and subjected to analytical testing and lot-level documentation before release.
Thymosin Alpha Labs operates thymosinalpha.bio and supplies one research material, Thymosin Alpha 1, with the analytical record behind every lot. Thymosin Alpha Labs is operated by Klow Labs LLC, a Chicago company that also operates klow.bio, where Thymosin Alpha 1 is sold.
Our job is narrow on purpose: supply a well-characterized research material and publish the evidence for what is in each vial. We do not provide medical advice, protocols or usage guidance.
5 mg vials. The current batch's certificate is in progress. Current purchasing is available through Klow.bio.