PT-141
PT-141 (bremelanotide) is a cyclic melanocortin-receptor agonist peptide. Supplied as a lyophilized acetate salt for in-vitro laboratory research — characterized to 99.2% by reversed-phase HPLC, identity confirmed by mass spectrometry, and shipped with a third-party certificate of analysis in every box.
Volume pricing applies automatically in your cart — 3+ vials 15% off, 5+ vials 25% off.
PT-141 (bremelanotide) is a cyclic melanocortin-receptor agonist peptide. Elyria Bio supplies it as a lyophilized 10 mg reference material, characterized to 99.2% by reversed-phase HPLC, for in-vitro laboratory research only.
Molecular formula C50H68N14O10 · molecular weight 1025.16 g/mol · CAS 189691-06-3. Every lot is held to a ≥99% HPLC purity floor and ships with a third-party certificate of analysis.
Overview
As a characterized reference material, PT-141 is used to standardize in-vitro assays in MC4R signaling research. Descriptors reference documented in-vitro and pre-clinical context only and make no therapeutic claim.
Elyria Bio supplies PT-141 as a lyophilized acetate salt, characterized by reversed-phase HPLC to 99.2% purity and confirmed by ESI mass spectrometry against its theoretical mass. Every lot ships with a third-party certificate of analysis documenting purity, identity, and endotoxin load (< 0.5 EU/mg), and is fully traceable to its matching COA. Pair it with GLP-2 or GLP-3, or browse the full metabolic collection for related reference standards.
Documented in-vitro applications
PT-141 is offered strictly as a laboratory reference material. The following describe documented in-vitro research contexts and make no therapeutic claim.
- MC4R receptor binding and activation assays
- Melanocortin signaling characterization studies
- Reference standard for melanocortin research
- Method development and validation for RP-HPLC and LC-MS identity assays
Specifications
Representative release specification. Each shipped lot is documented on its own signed third-party certificate of analysis.
Certificate of analysis
Every shipped vial resolves to a signed third-party COA. Preview the representative certificate for the current lot, download it as a PDF, or verify any printed lot number in batch lookup.
Certificate of Analysis
Lot On fileDocumentation you can verify
The COA is produced by an independent United States laboratory — not in-house — and reports RP-HPLC purity and mass-spec identity for this material's specific lot. The printed lot code on your vial resolves to this exact document and its assay date.
Storage & handling
Lyophilized PT-141 is stable long-term when kept cold and dry. Handle under standard laboratory aseptic technique.
Sealed and desiccated, protected from light. Stable approximately 1–2 years from the assay date printed on the COA.
After reconstitution with bacteriostatic water, refrigerate and use within the stability window appropriate for your study. Avoid repeated freeze-thaw cycles.
Divide into single-use aliquots before freezing to preserve integrity and minimize handling of the stock solution.
Reconstitute with sterile or bacteriostatic water for multi-draw laboratory preparations. Reconstitution volumes and concentrations are determined by the researcher for the assay at hand; Elyria Bio does not provide dosing guidance, as all materials are supplied for in-vitro research use only.
Shipping & guarantees
Handled like the reference materials they are — documented, protected, and dispatched fast within the United States.
Free shipping over $150
Flat $12 U.S. shipping, free over $150 — free express shipping over $250. Every order is fully tracked end to end.
U.S. domestic onlyCold-chain option
Temperature-controlled gel-pack shipping keeps lyophilized material stable in transit. Selectable at checkout.
Stability preserved48-hour dispatch
Orders ship within 48 hours in protective, tamper-evident packaging with the COA enclosed.
Fast fulfillmentDiscreet packaging
Plain, unbranded outer packaging with no product descriptors visible on the exterior.
Private by defaultShipment protection
Lost, damaged, or stolen packages are reshipped at no cost. Damage claims require photo evidence.
One-time replacement30-day returns
Unopened, unreconstituted vials are eligible for return within 30 days. Reconstituted product is not eligible.
Free return by mailDocumentation & traceability
Certificate of analysis
Signed by an independent US laboratory, reporting RP-HPLC purity and mass-spec identity for this material's lot.
Lot-traceable provenance
Each vial's printed lot number resolves to its matching certificate of analysis and full lot history.
Frequently asked questions
What is PT-141?
PT-141 (bremelanotide) is a cyclic melanocortin-receptor agonist peptide. Elyria Bio supplies it strictly as a lyophilized powder in-vitro laboratory reference material for qualified research professionals.
What is PT-141 used for in research?
In laboratory settings PT-141 is used as a reference standard in MC4R signaling assays and related in-vitro studies. It is not a drug, supplement, or food and is not for human or veterinary use.
How pure is Elyria Bio's PT-141?
Every lot is held to a ≥99% reversed-phase HPLC purity floor before release; the current lot is characterized at 99.2%. Molecular identity is confirmed by ESI mass spectrometry against the expected mass, and endotoxin is reported at < 0.5 EU/mg.
Does PT-141 ship with a certificate of analysis?
Yes. Each lot ships with a signed third-party certificate of analysis produced by an independent United States laboratory, reporting HPLC purity and mass-spec identity. Every vial's printed lot number resolves to its own COA and assay date, which you can confirm through batch lookup.
How should PT-141 be stored?
Store the lyophilized powder sealed and desiccated at −20°C, protected from light, where it is stable for 1–2 years. Once reconstituted with bacteriostatic water, refrigerate at 2–8°C and use within the stability window appropriate for the study; avoid repeated freeze-thaw cycles.
Is there bulk pricing for PT-141?
Yes. Multi-vial volume pricing applies automatically in the cart: 3 or more vials receive 15% off and 5 or more vials receive 25% off. Orders over $150 ship free within the United States, with free express shipping over $250.
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PT-141 is supplied as an in-vitro laboratory research material for qualified professionals. It is not a drug, supplement, or food, is not for human or veterinary use, and has not been evaluated by the FDA. Descriptors reference documented in-vitro and pre-clinical research context only and make no therapeutic claim. By purchasing, you represent that you are a qualified researcher acquiring this material for legitimate laboratory research.