CJC-1295 is the engineered long-life member of the GHRH-analogue family: the same 29-amino acid growth-hormone-releasing-hormone fragment found in sermorelin, modified with four amino acid substitutions for enzymatic resistance and fitted with a Drug Affinity Complex, the DAC, that bonds to serum albumin and stretches the molecule's persistence from minutes to days in research models. Heartland Bio Labs supplies CJC-1295 with DAC for laboratory research in 5mg vials with independent verification.
What "with DAC" actually means
This is the most misunderstood label in the secretagogue market, so it is worth being precise. The DAC is a reactive chemical group, maleimidopropionic acid, attached to the peptide's tail. In circulation it forms a covalent bond with albumin, the most abundant protein in serum, effectively turning the body's own carrier protein into a slow-release reservoir. A peptide sold as "CJC-1295 no DAC" is a different molecule, usually the tetrasubstituted fragment alone, often called Mod GRF(1-29), with a half-life measured in minutes rather than days. The two are not interchangeable in a study design, and a supplier who cannot tell you which one is in the vial has answered your quality question already. This product is the with-DAC molecule, stated on the label and verifiable on the certificate.
Where CJC-1295 sits in the family
The DAC suffix causes more confusion than any other term in this corner of the catalog. Our article on what With DAC actually means explains the modification and why it changes how the compound behaves in research settings.
All three GHRH analogues we stock share the same working core and differ in engineering. Sermorelin is the unmodified 1-29 fragment, the baseline. Tesamorelin keeps the hormone's full 44 residues and stabilizes the N-terminus. CJC-1295 takes the short fragment and engineers it for maximum persistence. On the other axis, ipamorelin works through the ghrelin receptor instead, and the two pathways meet in our CJC-1295 + ipamorelin blend for combined-pathway research designs.
Product characteristics
- Tetrasubstituted GRF(1-29) analogue with Drug Affinity Complex (maleimidopropionic acid)
- Covalent albumin binding; multi-day persistence in research models
- Approximate molecular weight: 3,647 g/mol
- Supplied as white lyophilized powder in sealed vials
- Available strength: 5mg; 2mg and 10mg vials appear with a notify option when not in stock
- HPLC purity and mass spectrometry identity, tested by an independent laboratory
- For laboratory research use only
How this product is verified
Because the with-DAC and no-DAC molecules differ by a defined chemical group, mass spectrometry settles the question instantly: the DAC adds measurable mass, and the certificate's identity result shows it. That is the practical reason to buy this compound only from suppliers who publish independent testing. Ours is in the COA portal, and our guides on HPLC vs mass spectrometry and vetting a research peptide supplier explain exactly how to read what you find there.
Pricing, storage, and shipping
The 5mg vial is $74, in stock, shipping same-day from the Tulsa, Oklahoma area on orders before 2:00 PM Central. Store lyophilized vials sealed, cool, dry, and away from light, refrigerated long term; reconstitute with bacteriostatic water and refrigerate the solution within your protocol's window. Institutional quantities run through our wholesale program.
Reconstitution math
Work out concentration (mg/mL), amount per volume and molarity for any vial size with the general peptide calculator. For the bench procedure see how to reconstitute peptides.
Research use only
CJC-1295 from Heartland Bio Labs is sold strictly for laboratory research and identification purposes. It is not a drug, it has not been evaluated by the FDA, and it is not for human or veterinary use of any kind. By purchasing, you affirm that you are qualified to handle research compounds and agree to our research use policy.
