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Peptide Science

The Biology of Peptides

Foundational science on peptide structure, receptor binding, and pharmacokinetics.

Amino Acid Chains

Peptides are 2-50 amino acid residues linked by peptide bonds. Their small size allows rapid absorption, targeted tissue delivery, and precise receptor binding with minimal off-target effects.

Receptor Specificity

Each peptide's unique sequence determines receptor affinity. BPC-157 demonstrates broad VEGF and NO pathway activity, while CJC-1295 selectively targets GHRH-R with high specificity.

SPPS Synthesis

Our peptides are produced via solid-phase peptide synthesis (SPPS) — the gold standard ensuring sequence accuracy, reproducibility, and high purity validated by HPLC and mass spec.

Stability & Storage

Lyophilized peptides remain stable 24+ months at -20°C. Upon reconstitution with bacteriostatic water, activity is preserved 4-6 weeks refrigerated at 2-8°C.

Key Peptide Families in Research

FamilyExamplePrimary Research AreaAvg. Purity
Body Protection CompoundsBPC-157Tissue repair, GI protection≥ 99.1%
ThymosinTB-500Actin regulation, wound healing≥ 99.0%
GHK CopperGHK-CuCollagen synthesis, angiogenesis≥ 98.8%
GHRH AnaloguesCJC-1295GH axis modulation≥ 99.2%
GHRPsIpamorelinSelective GH secretion≥ 99.3%
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    Frequently Asked Questions

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    info.peptider@gmail.com

    Standard shipping takes 3–5 business days within the US. Expedited options are available at checkout for 1–2 business day delivery.

    We currently ship within the United States. International shipping options are being evaluated and will be announced soon.

    Yes. All orders ship in plain, unmarked packaging with no external branding or product descriptions visible.

    Standard shipping is complimentary on orders over $150. Orders under $150 have a flat $9.95 shipping fee.

    Lyophilized peptides should be stored at -20°C for long-term stability. Refer to each product’s specification sheet for specific storage conditions.

    Yes. Temperature-sensitive products ship with insulated packaging and cold packs to maintain proper conditions during transit.

    Unopened products in original condition may be returned within 14 days of delivery. Due to the nature of research materials, opened products cannot be returned.

    Contact us immediately with photos of the damage. We will ship a replacement at no additional cost.

    Yes. Every batch undergoes independent third-party purity and identity testing via HPLC and mass spectrometry. Certificates of Analysis are available for each product.

    All research peptides are verified at ≥98% purity. Most products exceed 99% purity as confirmed by HPLC analysis.

    COAs are available on each product page. For batch-specific documentation, contact info.peptider@gmail.com with your order number.

    No. Peptider cannot provide personal-use guidance, dosing protocols, reconstitution instructions, or administration methods. All products are for research use only.

    No. All products are sold strictly for in vitro research and laboratory use only. They are not intended for human or veterinary consumption

    No. Peptider does not manufacture compounded medications. Actual product appearance and labeling may differ from website images.

    You can reach us via the contact form in this panel or by emailing info.peptider@gmail.com. We respond within 24 hours on business days.