Cornerstone Peptide Co.

CORNERSTONE PEPTIDE CO.

Custom Peptide Synthesis · Analytical-Grade Supply

Catalog

What we synthesize, and how.

Scale, modification, and analytical options available across catalog and custom-synthesis programs.

Scale

  • —Research scale (mg–g)
  • —Process development (g–100g)
  • —Pilot scale (100g–kg)
  • —Commercial scale (multi-kg, via partner)

Modifications

  • —Standard L-amino acids
  • —D-amino acids
  • —Unnatural amino acids (200+)
  • —Cyclization (head-to-tail, side-chain, disulfide)
  • —PEGylation
  • —Fluorophore labeling (FITC, TAMRA, Cy3, Cy5)
  • —Stapled peptides
  • —Long sequences (>50mer, NCL on request)

Analytical

  • —RP-HPLC (≥98% standard, ≥99% available)
  • —LC-MS / ESI-MS identity
  • —Karl Fischer water content
  • —LAL endotoxin
  • —GC residual solvents
  • —ICH Q3D heavy metals
  • —Amino acid analysis (on request)
  • —Optical rotation (on request)

Peptide categories

The peptides below are quoted to a ≥ 98% RP-HPLC purity target. Pricing, batch availability, packaging and documentation are confirmed during quotation. The catalog excludes patented molecules and FDA-approved drug substances by policy.

i.Reparative

Tissue Repair & Recovery

Research reagents commonly requested in repair, recovery, and related specialty studies.

View specifications →
ii.Endocrine

Growth Factor Modulators

Growth-factor-pathway research compounds for laboratory study and product development.

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iii.Neuro

Neuropeptides & Bioregulators

Neuroactive peptides and bioregulator fragments supported by product-specific documentation.

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v.Made to order

Specialty & Custom Synthesis

Custom sequences, special specifications, modifications, and buyer-specific development requirements — quoted to spec.

Custom sequences and special specifications quoted to your protocol — modifications, conjugates, scale, and analytical package per request.

Request a quote →

Final availability, specifications, packaging format, lead time, and documentation package are confirmed during quotation. Material is supplied as active pharmaceutical ingredient and research material; intended use and regulatory compliance are the responsibility of the purchaser.