CTK1C5218 (Polytyrosine, DL-)
CAS: 31724-37-5
Category: Peptides
| Purity | Research Grade ≥95%; High-Purity Grade ≥98%; Biochemical Grade ≥99% |
| Molecular Formula | (C9H9NO2)n |
| Molecular Weight | Repeating unit: 163.17 |
| Appearance | White to off-white powder or fibrous solid |
| Packaging | 100 mg, 500 mg, 1 g, 5 g, 25 g amber glass bottle; custom laboratory packaging available |
| Testing Indicators | Appearance — Visual inspection; Identification — FTIR spectroscopy; Structural confirmation — ¹H NMR, ¹³C NMR and amino acid analysis; Molecular weight distribution — Gel Permeation Chromatography (GPC/SEC); Purity — HPLC; Amino acid composition — HPLC after hydrolysis; Moisture — Karl Fischer titration (GB/T 6283); Residual solvents — GC-MS (ICH Q3C); Heavy metals — ICP-MS/ICP-OES; Thermal properties — DSC/TGA; Endotoxin (biomedical grade) — LAL assay. |
| Storage Notes | Store in tightly sealed containers in a cool, dry environment (2–8°C for long-term storage). Protect from moisture, heat, and direct sunlight. For prolonged storage, keep under an inert atmosphere or in a desiccator. Avoid repeated freeze-thaw cycles if supplied in solution. |
| Lead Time | 10 days |
Polytyrosine (DL-) is a synthetic polypeptide derived from tyrosine residues. It is widely used as a biodegradable polymer for biomaterials research, drug delivery systems, tissue engineering, surface modification, protein immobilization, peptide chemistry, and polymer science. It also serves as a model polymer for studying peptide secondary structures, enzymatic degradation, and biomacromolecular interactions.