⚠ FOR LABORATORY RESEARCH USE ONLY · NOT FOR HUMAN CONSUMPTION · QUALIFIED RESEARCHERS 21+
// PB-0030 Peptide Cognitive

Selank

Russian anxiolytic heptapeptide.

Selank is a synthetic heptapeptide anxiolytic developed at the Institute of Molecular Genetics of the Russian Academy of Sciences. Officially registered as a medicinal product in Russia, it represents a distinct approach to anxiolysis compared to benzodiazepines. Supplied as research-grade material with 3rd-party HPLC verification and full Certificate of Analysis per lot.

01

Compound profile.

// CHEMICAL & STRUCTURAL SPEC — SELANK
MOLECULAR FORMULA
C33H57N11O9
Peptide · cognitive class.
MOLECULAR WEIGHT
751.9 Da
Monoisotopic / reported mass.
CHAIN LENGTH
7 aa
Primary structure residues.
ORIGIN
Russian Academy of Sciences
Source or discovery context.
STUDIED PATHWAYS
GABAergic · BDNF
Reported in published literature.
REPORTED HALF-LIFE
Very short parenteral
Intranasal longer CNS.
HPLC PURITY
99.8%
Minimum release spec · typical >99.9%.
APPEARANCE
White lyo.
White to off-white lyophilized form.
// PRIMARY STRUCTURE
Thr–Lys–Pro–Arg–Pro–Gly–Pro

// Threonyl-lysyl-prolyl-arginyl-prolyl-glycyl-proline. A synthetic analog of the endogenous neuropeptide tuftsin (Thr-Lys-Pro-Arg) with a C-terminal Pro-Gly-Pro tripeptide extension for increased metabolic stability.
02

What the literature reports.

Selank is a synthetic heptapeptide anxiolytic developed at the Institute of Molecular Genetics of the Russian Academy of Sciences. Officially registered as a medicinal product in Russia, it represents a distinct approach to anxiolysis compared to benzodiazepines.

Reported mechanism

Published literature (primarily Russian) describes anxiolytic effects without sedation or dependence potential characteristic of benzodiazepines. Proposed mechanisms include GABA-ergic modulation, BDNF upregulation, and modulation of monoamine neurotransmitter systems.

Regulatory status

Registered and prescribed in Russia for generalized anxiety disorder. Not FDA-approved. Widely available outside Russia as a research compound. Often administered intranasally in both research and clinical Russian use.

The above summarizes published research literature. This is not medical advice, a protocol, or a recommendation for use. This compound is supplied for laboratory research only.

03

Storage & release.

SHIP TEMP
Ambient
Lyophilized; stable at room temp in transit.
UNOPENED
Refrigerate
Lyophilized, protected from light.
RECONSTITUTED
~28 days
At 2–8°C; never freeze solutions.
RELEASE DOC
COA · per lot
3rd-party analytical · attached at ship.
lab@peptidebros:~$ cat release.selank.SEL-26-Q2-0054.log
// lot release record
compound Selank (C33H57N11O9)
lot.id SEL-26-Q2-0054
class peptide
mw.theoretical 751.9 Da
mw.observed 751.9 Da  [PASS]
purity.hplc 99.91%  [> 99.5% spec]
endotoxin < 0.125 EU/mL  [PASS]
sterility no growth  [PASS]
release.status RELEASED
04

Common questions.

What's the molecular profile?+

Selank is a 7-residue peptide with molecular formula C33H57N11O9 and molecular weight of approximately 751.9 Da.

The full structural data and release specifications are in the Compound Profile section above. Every lot ships with an independently verified Certificate of Analysis.

How is purity verified?+

Each lot is independently verified by a 3rd-party analytical laboratory (STERIS Labs, Alcami Analytical, or equivalent) before release. Release specification is HPLC purity ≥ 99.5% (typical > 99.8%), mass spectrometry identity match within ±0.5 Da, water content < 5.0% Karl Fischer, and endotoxin < 0.25 EU/mL by LAL (USP <85>).

Look up the full COA for your lot at coa-lookup.html.

How is the compound shipped and stored?+

All compounds ship at ambient temperature in discreet, tamper-evident packaging. Lyophilized peptide powder is stable at room temperature for typical transit windows, which is why research-grade vendors ship this way. Tracked; signature not required.

Store unopened lyophilized product at 2–8°C protected from light. Once reconstituted, most peptides are stable at 2–8°C for approximately 28 days (compound-dependent).

Is this compound FDA-approved?+

Registered and prescribed in Russia for generalized anxiety disorder. Not FDA-approved. Widely available outside Russia as a research compound. Often administered intranasally in both research and clinical Russian use.

All PeptideBros compounds are sold strictly as chemical reference materials for in-vitro laboratory research. They are not for human consumption.

Every lot,
on paper.

HPLC-verified. Mass-spec confirmed. Ambient-stable transit. The paperwork other vendors hope you never ask for.