TB-500 Fragment
TB-500 Fragment is the N-terminal acetylated 17–23 fragment of Thymosin Beta-4 and is associated with CAS No. 885340-08-9. Its peptide sequence can be represented as Ac-LKKTETQ-OH. The product is supplied as a white or off-white powder and is soluble in water. The current specification includes purity of ≥98.0% and peptide assay of ≥75.0%. Quality parameters include water content, acetic acid, trifluoroacetic acid, residual solvents, related substances, bacterial endotoxin and microbial limits.
Description
TB-500 Fragment, commonly referred to as TB-500, is an N-terminal acetylated fragment corresponding to residues 17–23 of Thymosin Beta-4. FDA GSRS associates TB-500 with CAS No. 885340-08-9, while PubChem represents the peptide as Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln-OH (Ac-LKKTETQ-OH). Its molecular formula is C38H68N10O14 and its molecular weight is approximately 889.0 g/mol.
The product is supplied as a white or off-white powder and is soluble in water. Identification is performed by chromatographic comparison of the principal peak with the reference solution.
Purity is specified at ≥98.0%, with peptide assay specified at ≥75.0%. Additional quality controls include water content, acetic acid, trifluoroacetic acid, residual solvents, maximum single impurity, total impurities, bacterial endotoxin and microbial limits.
COA and relevant analytical quality documentation are available upon request.
Product Description
- Application Field
- Suitable for peptide-related research, analytical testing, method development, reference material studies and other laboratory R&D applications. Intended use and regulatory requirements should be evaluated according to the target market and final application.
- Packaging
- Packaging options are available according to order quantity. Please contact us for available pack sizes and customized packaging requirements.
- Storage Conditions
- Protect from light. Keep tightly sealed and store at -20°C ±5°C.
- Shelf Life
- 24 months under the recommended storage conditions. Please refer to the batch COA for the applicable expiration date.
Specifications
Test ItemSpecificationAppearanceWhite or off-white powderSolubilitySoluble in waterIdentificationConformsWater Content≤8.0%Acetic Acid≤15.0%Trifluoroacetic Acid≤0.5%Methanol≤0.3%Acetonitrile≤0.041%DMF≤0.088%Max. Single Impurity≤1.0%Total Impurities≤2.0%Purity≥98.0%Bacterial Endotoxin<10 EU/mgTotal Aerobic Microbial Count≤100 CFU/gAssay of Peptide≥75.0%
