Selank

Lot CP-SELANK-2606A · 10 mg

99.37 %

HPLC purity

Spec ≥ 99.0 %

86.1 %

Net peptide content

By amino acid analysis

< 0.22

Endotoxin (EU/mg)

Spec < 5.0 EU/mg

Provenance

Testing laboratory: Colmaric Analyticals
Accreditation: ISO/IEC 17025:2017
Country of synthesis: United States
Manufactured: Jun 19, 2026
Release tested: Jun 28, 2026 (3 months ago)
Retest date: Jun 18, 2028
CAS number: 129954-34-3
Molecular formula: C33H57N11O9
Theoretical mass: 751.88 Da
Observed mass (LC-MS): 752.13 Da (Δ 0.25 Da)

Assay results

Every line the release panel ran for this lot, with the method, the acceptance criterion and the measured value — not a pass mark alone.

Certificate of analysis — assay results
Method	Parameter	Specification	Result
RP-HPLC (UV 214 nm)	Purity (area %)	≥ 99.0 %	99.37 %	Pass
LC-MS (ESI+)	Identity — observed mass	751.88 ± 1.0 Da	752.13 Da	Pass
Amino acid analysis	Net peptide content	≥ 80.0 %	86.1 %	Pass
Karl Fischer	Water content	≤ 8.0 %	4.04 %	Pass
Ion chromatography	Residual TFA	≤ 1.0 %	0.26 %	Pass
LAL kinetic chromogenic	Bacterial endotoxin	< 5.0 EU/mg	< 0.22 EU/mg	Pass
USP <71> membrane filtration	Sterility	No growth	No growth	Pass
Visual / USP <790>	Appearance	White to off-white cake, free of visible particulates	Conforms	Pass

Sequence

H-Thr-Lys-Pro-Arg-Pro-Gly-Pro-OH

Handling for this lot

Appearance: White lyophilised powder
Storage: -20 °C lyophilised
Reconstitution: Stable and straightforward. No special handling beyond standard cold-chain practice.

Other lots of Selank

Compare batch to batch. Consistency across lots is a stronger signal than any single certificate.

CP-SELANK-2605B30 mg · tested May 20, 202699.82 %

Research use only. This certificate describes material supplied strictly for laboratory research. It is not a drug, food, cosmetic or medical device, has not been evaluated by the FDA, and is not intended for human or veterinary administration of any kind.