Sourcing guide · research use only
Where to buy AOD-9604 for research.
AOD-9604 is a modified C-terminal fragment of human growth hormone — residues 176-191 with an added N-terminal tyrosine — studied in laboratory metabolic research. Two facts change what a real certificate of analysis has to prove: it is a piece of a larger protein, so the failure mode is getting the wrong piece, and it carries a small disulfide loop that a purity number will never check. This guide covers what to verify before buying AOD-9604, why a fragment’s COA differs from a plain linear peptide’s, and the documented in-catalog compounds Titan actually stocks. It makes no human-use, dosing, or efficacy claims.
Before you buy
What an AOD-9604 COA must prove.
An AOD-9604 document has to do something a simple linear-peptide COA does not: prove you received the correct growth-hormone fragment, with its added tyrosine, and with its internal disulfide bond correctly formed. Run any AOD-9604 listing against this table before you trust the purity number on it.
| What to check | What a real COA shows | Red flag |
|---|---|---|
| Fragment identity (MS) | Mass spectrometry confirming the molecule is the specific C-terminal hGH fragment (residues 176-191) with the added N-terminal tyrosine — not the full growth-hormone protein, not a neighbouring fragment, and not a chain truncated short of the intended sequence | A purity figure with no mass-spec identity, so you cannot tell which fragment you actually received |
| Disulfide bond formed | Explicit confirmation that the internal disulfide loop is correctly oxidised — a reduced or scrambled disulfide has nearly the same mass and the same amino-acid composition, yet is a structurally different molecule a bare purity number will never separate | Silence on the disulfide, so an unfolded or mis-bridged batch passes as 'pure' |
| Added tyrosine present | The spec should account for the N-terminal tyrosine that distinguishes this analog from the plain hGH 176-191 fragment — its presence is part of the identity, not an optional extra | Documentation that names 'hGH 176-191' generically without resolving whether the tyrosine-modified analog was made |
| Purity figure (HPLC) | Purity stated with an HPLC chromatogram shown and the method named, run against the correct fragment — not a marketing round number that hides fragment and disulfide impurities | "99%+" with no chromatogram, no method, and no reference to the actual fragment |
| Lot / batch + compliance | A lot code matching the vial you receive, with documentation silent on human use | A generic reused COA, a mismatched lot, or fat-loss / metabolic / human-use claims dressed up as a research spec |
AOD-9604 is a fragment, so identity is the whole game
AOD-9604 is a synthetic analog of the C-terminal fragment of human growth hormone — residues 176-191 with a tyrosine added at the front — studied in laboratory metabolic research. Because it is a piece of a larger protein rather than a stand-alone designed peptide, the failure mode is getting the wrong piece: the full hGH protein, an adjacent fragment, or a chain that stops short. The one thing an AOD-9604 certificate of analysis must do is confirm by mass spectrometry that you received this exact fragment plus its tyrosine — not just report a percentage.
How to read a COA →Why the disulfide bond is the verification point others skip
The hGH C-terminal fragment carries a small internal disulfide loop, and that bond is where a fragment COA differs from a simple linear-peptide COA. A reduced (unbridged) or scrambled disulfide leaves the amino-acid composition and the rough mass almost unchanged, so it sails past a purity number — yet the molecule's shape, and therefore its identity, is different. A real document confirms the disulfide is correctly oxidised, not just that the residues are present.
What a documented supplier looks like →What Titan stocks instead
Titan does not currently list AOD-9604 in its catalog. Rather than sell a fragment it does not test in-house, this guide points researchers to the verification standard that applies to any growth-hormone-axis compound and to the documented options Titan does stock — including the CJC-1295 + Ipamorelin research blend studied on the GH-secretagogue side, and retatrutide on the metabolic-research side. Each ships lot-matched to a COA you can verify.
CJC-1295 + Ipamorelin →Red flags on AOD-9604 listings
Walk away from any AOD-9604 source whose documentation carries fat-loss, weight, or other human-use claims — that is a compliance red flag, not a quality spec. Be skeptical of a vial sold with a purity number but no mass-spec identity for the fragment, a COA that says nothing about the disulfide, documentation that names 'hGH 176-191' without resolving the tyrosine-modified analog, a reused generic document, or a lot code that does not match the unit.
Verify before you buy →How Titan fulfills research orders
Documented, lot-matched, crypto checkout.
- 1. Verify the document before the molecule. For a growth-hormone fragment, confirm the COA shows a chromatogram, names the HPLC method, confirms the exact fragment identity by mass spectrometry, and accounts for the disulfide bond — a fragment is more than a residue list and a percentage.
- 2. Lot-matched documentation. Titan’s in-catalog research compounds ship referenced to a batch code with an HPLC purity target and identity confirmation, so the document maps to the vial in your hand.
- 3. Crypto-only checkout. USDC, BTC, and SOL accepted; stablecoin keeps the total fixed from cart to on-chain confirmation.
- 4. Verify it yourself. Match the lot code to the unit and read the chromatogram — don’t accept a purity number on a disulfide-containing fragment without one.
AOD-9604 is a modified C-terminal fragment of human growth hormone studied in laboratory metabolic research. Titan does not currently list it; instead it stocks documented growth-hormone-axis options such as the CJC-1295 + Ipamorelin research blend and retatrutide, all HPLC-verified and lot-matched. Everything here is supplied strictly for research use only, with no human-use, dosing, or efficacy claims. This page is about sourcing and verification, not use.
Related reading