Lot-matched COA on file 2S-31
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A synthetic tetrapeptide with an amidated C-terminus, built on an alternating aromatic and cationic residue pattern. The sequence incorporates two non-standard residues: D-arginine at position 1 and 2,6-dimethyltyrosine at position 2.
The alternating charge and aromatic character give the molecule an affinity for anionic phospholipid membranes. This is a physicochemical property of the structure itself rather than a receptor interaction, which is unusual among the peptides in this catalogue and is the reason the scaffold appears in the structural literature.
COMPOSITION
Sequence D-Arg-2,6-dimethyl-Tyr-Lys-Phe-NH2 · MW 639.8 g/mol · CAS 736992-21-5
ANALYTICAL SPECIFICATION
Identity confirmed by mass spectrometry against the theoretical molecular weight. Purity by reverse-phase HPLC at 214 nm, reported as area percent. Each lot ships with a certificate of analysis matched to its lot number.
FORM AND STORAGE
White to off-white lyophilized powder. Store lyophilized, protected from light. The dimethyltyrosine residue is light-sensitive; amber vial storage is recommended.
Supplied for laboratory research use only. Not for human or veterinary use. No preparation, measurement, handling or application instructions are provided.
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Analytical specifications
| Chemical name | 2S-31 |
|---|---|
| Class | Synthetic aromatic-cationic tetrapeptide; C-amidated, with D-arginine and 2,6-dimethyltyrosine |
| Sequence | D-Arg-2,6-dimethyl-Tyr-Lys-Phe-NH2 |
| Molecular weight | 639.8 g/mol |
| Molecular formula | C₃₂H₄₉N₉O₅ |
| CAS number | 736992-21-5 |
| Purity | ≥ 99.5% (HPLC) |
| Identity | Confirmed by mass spectrometry |
| Form | Lyophilized powder |
| Amount | 10 mg per vial |
| Storage | Store lyophilized, protected from light |
| Current lot | KR260709A |
