Thymosin Alpha 1, also called thymalfasin, is an N-acetylated 28-residue peptide. The alpha-1 designation is part of the identity: it should not be shortened to an unspecified thymosin name on a material record.
Thymalfasin reference identity
PubChem connects thymalfasin with Thymosin Alpha 1 and records the N-acetylated structure below. The supplied report describes an N-acetylated 28-residue peptide, but does not print its complete sequence. The database and certificate fields should remain distinguishable.PubChem: Thymalfasin, CID 16130571 (opens in a new tab)Thymosin alpha-1 5 mg report: MA-TA1-0044 (opens in a new tab)
| Field | Reference or document detail |
|---|---|
| Names | Thymosin Alpha 1; thymosin alpha-1; thymalfasin |
| CAS for the reference peptide | 62304-98-7 |
| Sequence | Ac-SDAAVDTSSEITTKDLKEKKEVVEEAEN-OH |
| Residues | 28 |
| Molecular formula | C129H215N33O55 |
| Molecular weight | 3108.3 g/mol, reference peptide |
| Sample chemical form | Full counterion or hydration specification is not printed in the report |
Alpha-1 and beta-4 are separate identity trails
The existing NCBI records identify PTMA as prothymosin alpha and TMSB4X as thymosin beta-4. The historical prothymosin-alpha isolation paper places the alpha-1 sequence at the amino-terminal region of the larger material. These records separate the two naming trails rather than treating the alpha and beta designations as interchangeable.NCBI Gene: PTMA, record 5757 (opens in a new tab)NCBI Gene: TMSB4X, record 7114 (opens in a new tab)Haritos et al. (1984), PMID 6583693 (opens in a new tab)
The original alpha-1 isolation paper also distinguishes the isolated 28-residue component from thymosin fraction 5, the mixture from which it was separated. A mixture name is not a complete identity for one constituent.Goldstein et al. (1977), PMID 265536 (opens in a new tab)
Connect the reference to the batch document
Report MA-TA1-0044, revision 01, identifies lot TA1-44-UWE and gives LC-HRMS reference matching. Its printed N-acetylated 28-residue description is useful, but a full reference specification is still needed to reproduce every structural detail.Thymosin alpha-1 5 mg report: MA-TA1-0044 (opens in a new tab)
Keep the lot, report revision and stated chemical form alongside the sequence reference. The report’s measured content, 5.00 mg, and chromatographic area percentage, 99.33%, belong to the identified sample and should retain their original labels.Thymosin alpha-1 5 mg report: MA-TA1-0044 (opens in a new tab)
Product and certificate checks
Sources and further detail
- Thymosin alpha-1 5 mg report: MA-TA1-0044 (opens in a new tab)
Supplied PDF re-read on 3 October 2026. Identity wording and document-specific results are transcribed; this is not independent authentication.
- PubChem: Thymalfasin, CID 16130571 (opens in a new tab)
Existing primary identity record rechecked through PubChem formula, molecular-weight and synonym data on 3 October 2026. Salt-name synonyms are not treated as identical formula representations.
- Goldstein et al. (1977), PMID 265536 (opens in a new tab)
Existing dossier used for residue count and the isolated-component versus mixture distinction.
- NCBI Gene: PTMA, record 5757 (opens in a new tab)
Existing donor identity source for the prothymosin-alpha naming trail.
- NCBI Gene: TMSB4X, record 7114 (opens in a new tab)
Existing donor identity source for the separate beta-4 naming trail.
- Haritos et al. (1984), PMID 6583693 (opens in a new tab)
Existing donor source used only for the precursor-sequence relationship.
Revised 3 October 2026 using the existing source dossier and the specified primary identity records. Report values describe the linked samples. Products are for laboratory research use only.