§ Same category · Cognitive peptides
P-21 vs PNC-27
Side-by-side price comparison across every tracked vendor. Updated every 4–6 hours.
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P-21
4
vendors tracked
from $9.92/mg
PNC-27
7
vendors tracked
from $7.00/mg
◎ Cheapest $/mg:PNC-27 at $7.00/mg
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 2026-06-22Sort:
2026-06-22PNC-27
Tumor-selective membrane-disrupting peptide
Operational
$34.99
$7.00/mg
In stock◎ Best $/mg
Watch
$39.99
$8.00/mg
Out of stock▲ 14.3% vs best
Operational
$138.00
$27.60/mg
Out of stock▲ 294.4% vs best
| Vendor | Grade | Risk | Price | $/mg | Trend | Stock | |
|---|---|---|---|---|---|---|---|
| AMC Essentials US | B | Operational | $34.99 ◎ Best $/mg | $7.00 | In stock | Buy with code → | |
| Modern Research Peptides (.net) US | B- | Watch | $39.99 ▲ 14.3% | $8.00 | Out | Visit → | |
| Core Peptides US | A | Operational | $138.00 ▲ 294.4% | $27.60 | Out | Visit → |
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Last crawl 2026-06-22Sort:
2026-06-22About P-21
An 11-mer fragment derived from ciliary neurotrophic factor (CNTF), studied for neurogenesis and cognitive enhancement in preclinical models.
About PNC-27
A fusion peptide containing the MDM2 binding domain of p53 and a membrane-translocating signal, studied for cancer-cell-selective cytotoxicity.