Thymosin Alpha-1 10mg

No. Pepta Labs lists thymosin alpha-1 in one size only, a 10mg vial of lyophilized powder, sold singly or in the multi-vial packs shown on this page. No 5mg vial is listed.

A supplier-stated 10mg of freeze-dried thymosin alpha-1 powder in a sealed glass vial, with no liquid added. The 10mg is the gross weight of the dry material, which includes counter-ion and residual water, so the peptide-only fraction (net peptide content) is lower and is not reported per listing. Vial labels show the compound, quantity and research-use designation but carry no lot or batch number.

Typically an acetate or trifluoroacetate (TFA) salt. The counter-ion counts toward the stated 10mg of powder, which is why powder weight and peptide content differ. The Learn guide How Net Peptide Content Is Determined explains how that difference is measured.

Request it on this page or email support@peptalabs.com with the compound name and quantity; it is sent by email, before you order if you want to see it first. It shows the independent laboratory's RP-HPLC purity as area-% and the mass-spectrometry identity result for the production run Pepta Labs sourced, so compare the observed mass with the calculated average molecular weight of 3108.26 Da; a report may instead show charged ions or the monoisotopic mass of about 3106.5 Da. It is not a lot-specific certificate, and sterility and endotoxin testing are not claimed. The Learn guide How to Read and Verify a Peptide Certificate of Analysis (COA) walks through each field.

Keep the sealed vial of dry powder at 2-8 C on arrival, or at -20 C for longer storage, away from light and moisture. It ships as dry powder at ambient temperature with no cold pack. The Learn guide Storage Temperature and Handling of Lyophilized Research Peptides covers the reasons in more depth.

On this page, shipped to US addresses only, with free shipping. Pepta Labs is a US-based reseller; orders are placed from a free account with a confirmed email and a research-use certification at checkout, and buyers must be 21 or older.

Thymosin Alpha-1 10mg starts at $50.86 per vial. 3-vial packs are 7% off and 5-vial packs are 14% off. US shipping is free with no minimum.

Pepta Labs accepts Cash App, Venmo, Zelle, Bitcoin and Ethereum (5% crypto discount). Payment instructions are emailed as soon as you place your order.

No. Thymosin Alpha-1 10mg is offered solely for laboratory research and is not for human or animal use, consumption, administration, diagnosis or treatment. Buyers certify this at checkout.

Yes. Thymalfasin is the INN (international nonproprietary name) for the synthetic N-acetylated 28-residue peptide thymosin alpha-1; both names refer to CAS 62304-98-7, formula C129H215N33O55, molecular weight 3108.3 g/mol.

They are distinct molecules. Thymosin alpha-1 is a 28-residue acetylated peptide of 3108.3 g/mol (CAS 62304-98-7); thymosin beta-4 is a separate 43-residue peptide of about 4963 g/mol (CAS 77591-33-4). They share only the historical name thymosin, not sequence or mass.

Ac- denotes an acetyl group on the N-terminal serine, so the peptide has no free N-terminal amine. The acetyl group adds 42.01 Da to the mass and is part of the identity confirmed by mass spectrometry.