Peptides / Category
Cognitive / Nootropic Peptide Testing
Nootropic peptides include Russian heptapeptides (Selank, Semax) with N-acetyl and amidate variants that are often mis-labeled. We verify N-/C-terminal modifications by high-resolution MS.
Recommended Panel
- ✓RP-HPLC purity
- ✓LC-MS/MS identity (modification confirmation)
- ✓Residual solvents
Common Impurities to Watch For
Missing N-acetyl group, free vs. amidated C-terminus, sequence truncation.
Cognitive / Nootropic peptides we test (7)
Dihexa
456.62 g/mol
Small-molecule angiotensin IV analog; potent neurotrophic compound.
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DSIP (Delta Sleep-Inducing Peptide)
848.81 g/mol
Nonapeptide originally isolated from rabbit cerebral venous blood; sleep research.
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Noopept
318.37 g/mol
Synthetic dipeptide derivative; widely studied as a nootropic.
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P21 Peptide
~2200 g/mol
Synthetic peptide derived from CNTF; neurogenic research compound.
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PE 22-28
~830 g/mol
Shortened spadin analog blocking TREK-1 potassium channels; depression research.
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Selank / NA-Selank / NA-Selank-Amidate
751.88 g/mol
Heptapeptide based on tuftsin; Russian-developed anxiolytic research peptide. Available as plain, N-acetyl, and amidated variants.
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Semax / NA-Semax / NA-Semax-Amidate
813.94 g/mol
Heptapeptide based on the ACTH(4-10) fragment; cognitive research compound.
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