§ Same category · Cognitive peptides
N-Acetyl Selank vs P-21
Side-by-side price comparison across every tracked vendor. Updated every 4–6 hours.
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N-Acetyl Selank
4
vendors tracked
from $3.60/mg
P-21
4
vendors tracked
from $9.92/mg
◎ Cheapest $/mg:N-Acetyl Selank at $3.60/mg
N-Acetyl Selank
Acetylated Selank for stability
No current listings at 5mg.
P-21
CNTF-mimetic cognitive peptide
Operational
$116.00
$23.20/mg
In stock◎ Best $/mg
| Vendor | Grade | Risk | Price | $/mg | Trend | Stock | |
|---|---|---|---|---|---|---|---|
| Core Peptides US | A | Operational | $116.00 ◎ Best $/mg | $23.20 | In stock | Buy with code → |
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Last crawl 2026-06-21Sort:
2026-06-21About N-Acetyl Selank
An N-terminus acetylated version of Selank with improved metabolic stability. Research compound only.
About P-21
An 11-mer fragment derived from ciliary neurotrophic factor (CNTF), studied for neurogenesis and cognitive enhancement in preclinical models.