LOT YPB.228✓ COA VERIFIED
Compound information
Molecular profile
What is Selank?
TypeSynthetic heptapeptide
CAS number129954-34-3
Mol. weight751.9 g/mol
Amino acids7
FormulaC33H57N11O9
Storage requirements
Stability information
Protect from lightRoom-temp stable (short-term)
Lyophilized (powder)−20°C · stable long-term
Reconstituted2–8°C · use within 30 days
Lab verification
Verified by a third-party lab
This lotYPB.228
TestedDec 2025 · USA
Result6 of 6 tests passed
Research overview
Selank in the literature
Contents TP-7 Form / storage Lyophilized powder; store at −20 °C, protect from light Purity ≥98% — see lot COA CAS 129954-34-3 (free base); 2703745-90-6 (acetate) Molecular formula C33H57N11O9 Molecular weight 751.9 g/mol Sizes 10 mg Testing Identity (UV/Vis λmax), purity, assay (Beer-Lambert), heavy metals, microbial (TAMC/TYMC) COA Batch-specific — view on this page Research background Selank is a stabilized analog of the endogenous immunomodulatory tetrapeptide tuftsin (Thr-Lys-Pro-Arg), extended at the C-terminus with Pro-Gly-Pro to resist enzymatic degradation and prolong activity. Mechanisms examined in research include modulation of GABAergic and serotonergic signaling, effects on BDNF expression, and inhibition of enkephalin-degrading enzymes. It has been investigated in preclinical and early-stage models for anxiety-related behavior, cognition, immunomodulation, and stress responses. Research applications Preclinical anxiolytic / behavioral research Neurotransmitter-system and neurotrophic-factor studies Research on peptidase inhibition and enkephalin stability Quality & documentation Every lot is tested by an independent third-party laboratory before it enters the catalog.
HighlightsIt has been investigated in preclinical and early-stage models for anxiety-related behavior, cognition, immunomodulation, and stress responses.Research applications Preclinical anxiolytic / behavioral research Neurotransmitter-system and neurotrophic-factor studies Research on peptidase inhibition and enkephalin stability Quality & documentation Every lot is tested by an independent third-party laboratory before it enters the catalog.Testing covers identity (characteristic UV/Vis λmax matched to a reference standard), percent purity (≥98%, correlation-coefficient method), quantitative assay (Beer-Lambert, ≥95% of label claim), heavy metals (total ≤150 ppb — Pb, Cd, Hg, Ni, Fe, Co), and microbial limits (TAMC/TYMC).Each order ships with the Certificate of Analysis matching its lot number.
COA breakdown
✓ 6 of 6 tests passedPASSIdentityλ-max matchesLambda-max vs reference standardPASSPurity≥98% · UV/VisUV/Vis correlationPASSQuantitative assay≥95% of labelBeer-Lambert · ≥95% label claimPASSHeavy metals<20 ppbNMT 150 ppb/vial specPASSTAMC · aerobic microbial0 CFUNMT 1,000 CFU · 48 h @ 37 °CPASSTYMC · yeast & mold0 CFUNMT 100 CFU · 48 h @ 30 °C
Purity is measured per lot; panel results per the Analytical Formulations summary report for the lot currently shipping.
Product details
- Type
- Synthetic heptapeptide
- CAS number
- 129954-34-3
- Molecular weight
- 751.9 g/mol
- Formula
- C33H57N11O9
- Form
- Lyophilized powder
- Storage
- Room temp in transit · −20 °C long-term
