Thymosin Alpha-1 API (Thymalfasin) Bulk Powder

1. Chemical Information
   • Active Ingredient: Thymosin Alpha-1 free base
   • Sequence: Ac-Ser-Asp-Ala-Ala-Val-Asp-Thr-Ser-Ser-Glu-Ile-Thr-Thr-Lys-Asp-Leu-Lys-Glu-Lys-Lys-Glu-Val-Val-Glu-Glu-Ala-Glu-Asn-OH
   • Appearance: White to off-white crystalline lyophilized powder
   • Solubility: Freely soluble in purified water, max solubility 2 mg/mL
2. Quality Standard
   • Assay (HPLC): ≥99.0%
   • Single maximum impurity: ≤0.5%
   • Total related peptides: ≤1.0%
   • Water content: ≤5.0%
   • Residual solvent & heavy metal comply with ICH Q3A/B limits
3. Storage & Packaging
   • Sealed aluminum foil bag / glass vial under nitrogen protection
   • Storage: Desiccated, ≤ -18 °C, avoid repeated freeze-thaw
   • Shelf life: 2 years under proper storage
4. Application
   Raw material for lyophilized injectable finished drug; research-grade immune peptide for laboratory immunology & anti-inflammation studies.