Verifying AOD-9604 research peptide identity is essential when purchasing laboratory materials in the UK. A product name, vial label or advertised purity percentage does not independently confirm that the supplied compound has the intended molecular structure.
Research buyers should examine sequence information, molecular identity evidence and batch-specific analytical records before approving a supplier.
What Is the Molecular Identity of AOD-9604?
AOD-9604 is a synthetic peptide derived from the C-terminal region of human growth hormone.
It is commonly described as a modified fragment corresponding to growth hormone residues 176–191, with an additional N-terminal tyrosine.
Its commonly reported sequence is:
Tyr-Leu-Arg-Ile-Val-Gln-Cys-Arg-Ser-Val-Glu-Gly-Ser-Cys-Gly-Phe
The two cysteine residues can form a disulphide bond, making oxidation state relevant to structural verification.
Suppliers should specify the intended molecular form rather than relying solely on the name AOD-9604.
Which Identity Tests Should Buyers Check?
Different analytical techniques provide different types of evidence.
| Analytical method | What it can establish |
|---|---|
| Mass spectrometry | Molecular mass consistent with the proposed compound |
| LC-MS | Chromatographic behaviour alongside mass information |
| Peptide mapping | Evidence supporting sequence-related structural features |
| HPLC | Chromatographic separation and impurity profile |
A molecular mass match is useful but cannot independently distinguish every possible structural isomer.
Likewise, a high HPLC purity result does not prove that the principal peak represents the correct peptide.
Why Does Batch-Specific Identity Matter?
A supplier may display an analytical report for one production lot while supplying material from another.
Laboratories should confirm that the identity report refers to the actual batch being purchased.
Check the compound designation, batch number, analytical method and reported findings.
For a more detailed documentation review, see our AOD-9604 COA verification guide.
Buyers reviewing the Peptide Lab Direct UK research catalogue should likewise request applicable batch documentation before procurement.
Frequently Asked Questions
1. Is AOD-9604 the same as full-length growth hormone?
No. It is a much shorter, modified peptide fragment.
2. Can molecular weight confirm identity?
It supports identification but cannot establish the complete structure alone.
3. Does HPLC purity confirm peptide sequence?
No. Purity assessment and structural identification are separate analytical questions.
4. Why is the disulphide bond important?
Its presence or absence affects the peptide’s molecular structure.
5. Should suppliers provide sequence information?
Yes. Sequence information helps laboratories verify the intended research material.
6. Must identity testing match the supplied batch?
Batch-specific evidence is preferable for traceable laboratory procurement.
Conclusion
AOD-9604 research peptide identity should be assessed using defined structural specifications and suitable analytical evidence. UK laboratories should verify the intended peptide form and its relationship to the supplied batch before purchasing.
For laboratory research only. Not intended for human administration.
Scientific References
- ICH Q6B — Specifications: Test Procedures and Acceptance Criteria for Biotechnological/Biological Products: https://www.ich.org/page/quality-guidelines
- ICH Q2(R2) — Validation of Analytical Procedures: https://www.ich.org/page/quality-guidelines
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