DALDA peptide

DALDA peptide

• COA/MS/HPLC Report
• Handling and Storage of Synthetic Peptides
• Material Safety Data Sheets (MSDS)

Batch to batch variation of the purity

H-YrFK-OH

H-Tyr-(D)Arg-Phe-Lys-OH

4

99.77%

C₃₀H₄₄N₈O₆

612.72

Synthetic

Powder

DALDA is a metabolically stable neuropeptide. DALDA has a plasma pharmacokinetic profile similar to that of sucrose. DALDA, which has a molecular weight of 616, has a log PC that is twofold greater than that of sucrose, and DALDA has a BBB PS product that is also twofold greater than that of sucrose. DALDA slowly traverses the BBB via lipid-mediated free diffusion.

Normally, this peptide will be delivered in lyophilized form and should be stored in a freezer at or below -20 °C. For more details, please refer to the manual: Handling and Storage of Synthetic Peptides

• Samii A, Bickel U, Stroth U, Pardridge WM. Blood-brain barrier transport of neuropeptides: analysis with a metabolically stable dermorphin analogue. Am J Physiol. 1994 Jul;267(1 Pt 1):E124-31. doi: 10.1152/ajpendo.1994.267.1.E124. PMID: 8048500.

Trifluoroacetic acid (TFA) is a common counterion from the purification process using High-Performance Liquid Chromatography (HPLC). The presence of TFA can affect the peptide's net weight, appearance, and solubility.

Impact on Net Weight: The TFA salt contributes to the total mass of the product. In most cases, the peptide content constitutes >80% of the total weight, with TFA accounting for the remainder.

Solubility: TFA salts generally enhance the solubility of peptides in aqueous solutions.

In Biological Assays: For most standard in vitro assays, the residual TFA levels do not cause interference. However, for highly sensitive cellular or biochemical studies, please be aware of its presence.