Thymulin

Thymulin is a synthetic nonapeptide corresponding to thymulin (serum thymic factor), H-pGlu-Ala-Lys-Ser-Gln-Gly-Gly-Ser-Asn-OH, a classical zinc-associated thymic nonapeptide first characterized by Bach and Dardenne — distinct from the Khavinson short-peptide line and from the bovine-thymus extract Thymalin. It is listed here strictly as an analytical reference entity — it is not sold, stocked, or certified by Lineará, and has no price or certificate of analysis. The data on this page is characterization only: molecular formula C33H54N12O15 and the values computed from it. No biological activity, mechanism, or use is described or implied.

Thymulin has the sequence pGlu-Ala-Lys-Ser-Gln-Gly-Gly-Ser-Asn. A nonapeptide with an N-terminal pyroglutamate, H-pGlu-Ala-Lys-Ser-Gln-Gly-Gly-Ser-Asn-OH (serum thymic factor, FTS). The formula and mass here are for the metal-free nonapeptide, C33H54N12O15, the CAS-63958-90-7 entity; thymulin proper is the zinc-BOUND complex of this same nonapeptide, and the zinc is a bound cofactor — NOT part of the covalent formula (cf. the GHK-Cu precedent). Identity is reconciled against PubChem CID 3085284: the stereo-defined InChIKey LIFNDDBLJFPEAN-BPSSIEEOSA-N matches the deposited record exactly (seven stereocentres, none unassigned). It is a defined synthetic nonapeptide from a classical thymic lineage (Bach and Dardenne), NOT a Khavinson short peptide, and must be kept distinct from Thymalin — a bovine-thymus polypeptide extract with which registries frequently, and wrongly, conflate it; Thymalin is therefore excluded from the synonyms. A computed 3D conformer is held pending the chemist sign-off.

Thymulin has the molecular formula C33H54N12O15, giving an average molecular weight of 858.86 g/mol and a computed monoisotopic mass of 858.3832 Da.

The CAS Registry Number for Thymulin is 63958-90-7. Its PubChem CID is 3085284, its FDA UNII is 9H198D04WL, and its InChIKey is LIFNDDBLJFPEAN-BPSSIEEOSA-N.

Yes. Thymulin is a peptide — a chain of amino-acid residues joined by peptide bonds, 9 residues in length. Its identity is defined by that sequence and its molecular mass.

As a research material, Thymulin is typically handled as a lyophilized (freeze-dried) powder. It is kept desiccated and cold — commonly 2–8 °C for short periods and −20 °C for longer storage — and reconstituted in sterile or bacteriostatic water. This is storage and handling information only, not a use protocol.

No. Thymulin is listed here only as an analytical reference entity. It is not part of the Lineará formulary, has no price or certificate of analysis, and is not offered for sale.

No. Thymulin is presented strictly as characterization reference data. It is not a drug, is not approved for any human or veterinary use, and must not be administered to humans or animals.