CJC 1295 (Modified GRF 1-29) is a synthetic analogue of growth hormone releasing hormone (GHRH) that binds to and activates GHRH receptors in the anterior pituitary, stimulating the release of growth hormone in a pulsatile, physiologically natural pattern.
The No DAC form produces a short-duration GH pulse that mirrors the body's natural secretion rhythm. CJC-1295 No DAC is most frequently studied alongside ipamorelin, with CJC 1295 ipamorelin research demonstrating synergistic GH release through simultaneous activation of complementary receptor pathways in the somatotropic axis.
CJC 1295 must be reconstituted with bacteriostatic water before use in research applications.
Size / Amount:
CAS: 863288-34-0
Also Known As: Modified GRF 1-29, CJC-1295 No DAC, Mod GRF(1-29)
Sequence: 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
Molecular Formula: C152H252N44O42
Molecular Weight: 3367.9 Da
Purity: 99%+ (verified by HPLC)
Appearance: White to off-white lyophilized powder
Form: Lyophilized (freeze-dried)
Classification: GHRH Analogue (Growth Hormone Releasing Hormone Analogue)
CJC 1295 No DAC (Modified GRF 1-29) has an active half-life of approximately 30 minutes. Each administration produces a discrete GH pulse that closely mimics the body's natural pulsatile secretion rhythm. CJC 1295 with DAC includes a Drug Affinity Complex that binds the peptide to circulating albumin, extending its half-life to 6-8 days and producing a sustained GH elevation rather than a pulse. The No DAC form is preferred in research protocols that aim to replicate natural GH pulsatility.
CJC 1295 vials must be stored in a cool, dry place away from direct sunlight. Unreconstituted CJC 1295 peptide should be kept at -20°C for long-term storage or 2-8°C for short-term use. Once reconstituted with bacteriostatic water, CJC 1295 should be refrigerated at 2-8°C and used within 28-30 days. CJC-1295/ipamorelin storage temperature post-reconstitution follows the same standard for both peptides. Do not freeze reconstituted solutions.
CJC 1295 is freely soluble in bacteriostatic water and sterile saline. Gently swirl the vial after adding solvent. Do not vortex or shake vigorously, as this may damage the peptide structure.
CJC 1295 is intended for research purposes only and is not approved for human use.
CJC 1295 dosage used in preclinical and pharmacological research varies by study design and the form studied. CJC 1295 dosing protocols in published literature include:
CJC 1295 dosage and timing in research protocols commonly targets administration in a fasted state or prior to rest cycles to maximize GH pulse amplitude, consistent with the natural suppression of GH secretion during fed states. CJC-1295 ipamorelin dosage per day and CJC-1295 dac dosage per day differ substantially due to the DAC form's extended half-life.
CJC 1295 is supplied as a lyophilized (freeze-dried) powder to ensure stability during storage and transport. For research use, the peptide must be reconstituted using bacteriostatic water or sterile saline. Introduce the solvent slowly down the inside wall of the vial and gently swirl to dissolve. Do not shake or vortex the solution. CJC-1295/ipamorelin storage temperature post-reconstitution should be maintained at 2-8°C and the solution used within 28-30 days. When preparing a CJC 1295 ipamorelin bacteriostatic water mix, maintain the same handling standards for both peptides. Unreconstituted CJC 1295 peptide should be kept at -20°C for long-term stability.
Teichman et al. demonstrated that CJC-1295 produced dose-dependent increases in mean growth hormone concentrations of 2-10-fold above baseline, with IGF-1 levels elevated 1.5-3-fold. The GH response persisted for up to 6 days after a single administration. The study established the compound's potent pharmacokinetic profile and confirmed that GHRH analogues are capable of producing durable, dose-proportional activation of the somatotropic axis, providing the foundational pharmacology underlying CJC 1295 peptide research.
Rommel et al. identified the PI3K/Akt/mTOR signaling cascade as the primary mechanism through which IGF-1 drives skeletal muscle hypertrophy, demonstrating that activation of this pathway is both necessary and sufficient to produce muscle cell enlargement in preclinical models. Because CJC 1295 stimulates GH release, which in turn drives hepatic IGF-1 production, this research provides direct mechanistic context for CJC 1295 benefits in muscle growth research and underlines the biological significance of GH/IGF-1 axis activation.
Bowers et al. demonstrated that co-administration of a growth hormone-releasing peptide (GHRP) with GHRH produces a synergistic GH pulse substantially greater than either compound achieves independently. The study identified the dual-receptor mechanism that underlies modern GHRP/GHRH combination protocols: CJC-1295 activates GHRH receptors via the cAMP pathway while ipamorelin activates GHS-R receptors via the phospholipase C/calcium pathway, with both pathways converging on GH secretion from pituitary somatotrophs. This foundational finding provides the scientific rationale for the widely studied CJC 1295 ipamorelin combination.
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