Product Details
CJC 1295 No DAC (Mod GRF 1-29) — Research Grade Peptide, ≥98% Purity (HPLC)
Modified GHRH analog. Lyophilized powder. Lot-specific COA included.
CJC 1295 No DAC, also known as Modified GRF 1-29 (Mod GRF 1-29), is a synthetic 29-amino acid peptide analog of growth hormone-releasing hormone (GHRH). Its sequence incorporates four substitutions relative to native GRF(1-29) — D-Ala at position 2, Gln at position 8, Ala at position 15, and Leu at position 27 — that confer resistance to dipeptidyl peptidase IV (DPP-IV) cleavage and extend its plasma half-life to approximately 30 minutes, compared with the 5–10 minute half-life of native GHRH.
CJC 1295 no DAC (Mod GRF 1-29) — Research Grade Peptide
Synthetic 29-amino acid GHRH analog supplied as a lyophilized powder. ≥98% purity verified by HPLC, identity confirmed by mass spectrometry. Lot-specific COA included. CAS 446262-90-4. Store at −20 °C, desiccated and protected from light. For laboratory research use only — not for human or veterinary use.
The compound is the active peptide component of the CJC-1295 platform without the Drug Affinity Complex (DAC) moiety. Without DAC, the peptide does not covalently bind serum albumin, and its pharmacokinetic profile is short-acting and pulsatile rather than sustained. This distinction is pharmacologically critical and is the single most important specification to verify when purchasing.
Supplied as a sterile-filtered, lyophilized powder for in vitro and preclinical research applications. Each lot is independently verified for purity and identity and ships with a Certificate of Analysis. CJC 1295 No DAC
Specifications
| Parameter | Detail |
|---|---|
| CAS Number (free base) | 446262-90-4 |
| CAS Number (acetate) | 863288-34-0 (deleted CAS) |
| Molecular Formula | C₁₅₂H₂₅₂N₄₄O₄₂ |
| Molecular Weight | 3367.9 g/mol (free base) |
| Sequence | H-Tyr-D-Ala-Asp-Ala-Ile-Phe-Thr-Gln-Ser-Tyr-Arg-Lys-Val-Leu-Ala-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Leu-Ser-Arg-NH₂ |
| Purity | ≥98% (HPLC) |
| Identity | Confirmed by mass spectrometry |
| Appearance | White to off-white lyophilized powder |
| Solubility | Soluble in water and aqueous buffers |
| Storage | −20 °C, desiccated, protected from light |
| Format | Lyophilized powder, sterile-filtered |
| Documentation | Lot-specific COA (HPLC + MS) |
Note: CJC-1295 without DAC is routinely sold under the same registry number as CJC-1295 with DAC, and the two molecules cannot be distinguished by CAS number alone. They differ only in molecular weight and formula. CJC-1295 with DAC has a molecular weight of approximately 3647 g/mol. Verify the molecular weight on your COA matches 3367.9 g/mol before accepting the lot.
Research applications
CJC-1295 without DAC is used in laboratory settings to investigate:
-
GHRH receptor signaling — activation of the GHRH receptor on anterior pituitary somatotrophs and downstream cAMP/PKA pathway in cell culture models
-
Pulsatile growth hormone release — the short half-life produces discrete GH pulses rather than sustained elevation, a pharmacokinetic profile distinct from the DAC version
-
DPP-IV resistance research — the four amino acid substitutions that protect the peptide from enzymatic degradation, studied as a model for peptide stability engineering
-
Analytical method development — LC-MS/MS differentiation of CJC-1295 with and without DAC, a known challenge in peptide quality control
-
Comparative GHRH analog studies — head-to-head pharmacokinetic comparison with native GRF(1-29), sermorelin, and tesamorelin in preclinical models
Handling and storage
Reconstitute under aseptic conditions using sterile water or an appropriate aqueous buffer. CJC 1295 without DAC is soluble in water. Aliquot immediately after reconstitution to avoid repeated freeze-thaw cycles. Lyophilized powder is stable for up to 2 years at −20 °C under sealed, desiccated, light-protected conditions. Reconstituted solutions should be stored at 2–8 °C and used within 14–21 days. Do not freeze reconstituted solution. CJC 1295 No DAC
For laboratory use by qualified personnel only.









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