Overview

Thymalin is supplied as the synthetic thymic nonapeptide thymulin, a nine-residue peptide first characterized in 1977. It has the molecular formula C 33 H 54 N 12 O 15 , a molecular weight of approximately 858.86 g/mol, and CAS number 63958-90-7 (thymulin).

The peptide carries an N-terminal pyroglutamate and has the sequence Pyr-Ala-Lys-Ser-Gln-Gly-Gly-Ser-Asn . It is described in the literature as a zinc-binding thymic factor, with the metal-bound form being the one characterized as biologically active; the peptide is supplied metal-free.

A note on naming: Material supplied under the name Thymalin is the synthetic thymic nonapeptide thymulin. The name derives from Thymalin, a Russian thymus-extract preparation with no single defined structure; the material offered here is the chemically defined synthetic nonapeptide, and is the same compound listed on this site as Thymulin.

This product is strictly for research purposes only. Not approved for human or animal use.

PubChem Reference: View compound profile on NIH PubChem

This product is strictly for research purposes only. Not approved for human or animal use.

Key Characteristics

MOLECULAR PROFILE

Formula: C 33 H 54 N 12 O 15

Weight: 858.86 g/mol (metal-free)

CAS: 63958-90-7 (thymulin)

Sequence: Pyr-Ala-Lys-Ser-Gln-Gly-Gly-Ser-Asn

Structure: Nonapeptide (9 amino acids), N-terminal pyroglutamate

PHYSICAL PROPERTIES

Form: White to off-white lyophilized powder

Solubility: Soluble in water

Purity: ≥98% (HPLC)

Storage: Keep refrigerated 36‑46 °F (2‑8 °C)