Lot-matched COA on file KYN-PT41
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A synthetic cyclic peptide of seven amino acid residues. The ring is closed by a lactam bridge formed between two side chains, which constrains the backbone into a fixed conformation. That cyclisation is the principal structural difference from the linear 13-residue peptides of the same family, and it substantially increases resistance to exopeptidase cleavage, since the molecule presents no free N- or C-terminus of the usual kind.
COMPOSITION
Cyclic heptapeptide, side-chain lactam bridged · MW 1,025.2 g/mol · CAS 189691-06-3
ANALYTICAL SPECIFICATION
Identity confirmed by mass spectrometry against the theoretical molecular weight. Purity by reverse-phase HPLC at 214 nm, reported as area percent. Cyclic peptides give characteristically sharp chromatographic peaks relative to their linear counterparts. Each lot ships with a certificate of analysis matched to its lot number.
SUPPLY FORMAT
Supplied as a 10 mg vial, the standard size across this category, which makes the material directly comparable between suppliers.
FORM AND STORAGE
White to off-white lyophilized powder. Store lyophilized, protected from light. The tryptophan 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 | KYN-PT41 |
|---|---|
| Class | Synthetic cyclic heptapeptide; side-chain lactam bridged |
| Sequence | Ac-Nle-cyclo-(Asp-His-D-Phe-Arg-Trp-Lys-OH) |
| Molecular weight | 1,025.2 g/mol |
| Molecular formula | C₅₀H₆₈N₁₄O₁₀ |
| CAS number | 189691-06-3 |
| Purity | ≥ 99.79% (HPLC) |
| Identity | Confirmed by mass spectrometry |
| Form | Lyophilized powder |
| Amount | 10 mg per vial |
| Storage | Store lyophilized, protected from light |
| Current lot | KR260709A |



