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CJC-1295 NO DAC

GHRH analog · 29 amino acids · CAS 863288-34-0

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Čistota ≥98% HPLC analýza Sklad v Polsku
99,00 PLN
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Skladem · Expedice 1-2 dny · InPost / Kurýr · Platba BLIK
Skladování v chladírně -20°C
Certifikát analýzy (CoA)
Platba BLIK
14 dní na vrácení
For research use only. Not for human use.
Wyłącznie do celów badawczych. Nie do użytku ludzkiego.

Popis produktu

Physicochemical Properties

ParameterValue
Molecular formulaC₁₅₂H₂₅₂N₄₄O₄₂
Molecular weight~3367.9 Da
Amino acid count29
CAS number863288-34-0
PubChem CID56841945
Physical formWhite lyophilized powder
Purity≥98% (RP-HPLC)
ClassificationChemical reagent / research material
Intended useFor in vitro research use only, not for use in humans or animals

Not classified as a hazardous substance under CLP regulation. Offered as a chemical reagent for in vitro laboratory use, within the framework of applicable European Union chemical substances regulations (REACH, CLP).

In Vitro Laboratory Use

Reconstitution and storage conditions:

  • Dissolve in sterile water or phosphate buffer (recommended pH 6.0–7.4); working concentration per analytical protocol
  • Storage of unreconstituted powder: −20 °C, dry location, protected from light
  • After reconstitution: aliquots in microtubes, single thaw, short-term storage at 2–8 °C

Typical analytical equipment:

  • HPLC column dedicated to peptide analysis (e.g., C18, 150–250 mm)
  • HPLC system with detector (UV 220 nm, FLD or MS — depending on protocol)
  • Autosampler vials, laboratory test tubes, precision pipettes
  • Analytical balance with ≥0.1 mg accuracy for sample weighing

All working parameters should be selected according to the research laboratory’s internal protocol. Product intended exclusively for in vitro and analytical use; not for human or animal use.

Vědecký výzkum a podrobnosti

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Mechanism of Action of Mod GRF 1-29

CJC-1295 NO DAC acts as an agonist of the GHRH-R (Growth Hormone Releasing Hormone Receptor) — a Gs protein-coupled receptor located on somatotrophs of the anterior pituitary. Receptor activation initiates the cAMP/PKA cascade, leading to GH1 gene transcription and growth hormone release.

Four amino acid substitutions at positions 2, 8, 15, and 27 of the GHRH(1-29) sequence protect the peptide from degradation by dipeptidyl peptidase IV (DPP-IV) — an enzyme that physiologically inactivates native GHRH within minutes. As a result, CJC-1295 NO DAC retains biological activity significantly longer than endogenous GHRH.

Structure and Modifications of Mod GRF 1-29

Native growth hormone releasing hormone (GHRH) consists of 44 amino acids, but as early as the 1980s, it was demonstrated that full biological activity at the GHRH-R receptor is retained by a fragment comprising only the first 29 residues. This fragment, designated GRF(1-29) or sermorelin, became the starting point for designing analogs with increased metabolic stability. The name "Mod GRF 1-29" was introduced to distinguish the modified peptide from unmodified GRF(1-29), which undergoes rapid enzymatic degradation under physiological conditions.

Four key amino acid substitutions confer protease resistance to Mod GRF 1-29. At position 2, alanine was replaced with D-alanine, protecting the N-terminus from DPP-IV cleavage. At position 8, asparagine was replaced with aspartic acid, eliminating susceptibility to deamidation — a spontaneous loss of the amide group that at neutral pH leads to loss of activity. At position 15, an alanine residue modification limits further proteolysis in the middle chain segment. Finally, at position 27, methionine was replaced with leucine, preventing oxidation of the methionine thioether group to sulfoxide — one of the most common oxidative degradation pathways in peptides.

Together, these modifications extend the half-life from several minutes (native GHRH) to approximately 30 minutes, while maintaining full GHRH-R receptor affinity and cAMP/PKA cascade activation capacity in somatotrophs.

Research Overview

Discovery and characterization of GHRH

Growth hormone releasing hormone was identified in 1982 by two independent research teams nearly simultaneously. Guillemin et al. isolated a 44-amino acid peptide with GH-releasing activity from a pancreatic tumor of a individual with ectopic acromegaly, publishing in Science [1]. In parallel, Rivier, Spiess, Thorner, and Vale characterized the 40-amino acid form of the same hormone, publishing in Nature the same year [2].

GHRH analog research

After identification of native GHRH, its extremely short in vivo half-life due to DPP-IV degradation was recognized as a major limitation. This led to development of modified analogs including Mod GRF 1-29. Teichman et al. (2006) published pharmacokinetic characterization in Journal of Clinical Endocrinology and Metabolism, demonstrating sustained GH/IGF-1 axis stimulation [3].

GHRH and GHS synergy

One of the most significant discoveries in somatotropic axis research is the synergy between GHRH and growth hormone secretagogues (GHS). Bowers et al. in their landmark 1984 paper described a new synthetic hexapeptide capable of specific GH release from the pituitary [4]. Later studies confirmed that simultaneous stimulation of two independent signaling pathways — the GHRH-R/cAMP/PKA pathway (activated by GHRH analogs) and the GHS-R1a/IP3/DAG pathway (activated by ghrelin, GHRP-6, or Ipamorelin) — produces GH release several-fold greater than the sum of individual effects. This forms the scientific basis for blend products such as CJC-1295 NO DAC + Ipamorelin.

Role of DPP-IV in GHRH degradation

Dipeptidyl peptidase IV (DPP-IV, also known as CD26) is a membrane serine protease that cleaves two-amino acid fragments from the N-terminus of peptides having proline or alanine at position 2. Native GHRH(1-44) has alanine at position 2, making it a DPP-IV substrate with degradation to inactive GHRH(3-44) within minutes. The D-alanine substitution at position 2 in Mod GRF 1-29 effectively eliminates recognition by the DPP-IV active site due to the enzyme's strict stereoselectivity for L-amino acids.

Stability and Storage

In lyophilized form, CJC-1295 NO DAC shows high stability at -20°C, away from light and moisture. After reconstitution in sterile water, store at 2-8°C and use within 30 days. Two of the four amino acid modifications were designed specifically for chemical stability: Met27→Leu eliminates methionine sulfoxide oxidation, and Asn8→Asp prevents asparagine deamidation.

Related Research Materials

CJC-1295 NO DAC is also available as a blend with Ipamorelin — CJC-1295 NO DAC + Ipamorelin combines both peptides targeting the somatotropic axis through two independent receptor pathways.

Bibliografie

2 vědecké publikace

Selected publications on GHRH analogs, Mod GRF 1-29, and growth hormone secretagogues.

1. Ionescu M, Bhatt DL (2004)

"Modified GRF(1-29) after subcutaneous and intranasal administration in healthy volunteers"

British Journal of Clinical Pharmacology, 58(5):548-555

2. Alba M, et al. (2006)

"Once-daily administration of CJC-1295, a long-acting growth hormone-releasing hormone analog, normalizes growth in growth hormone-deficient adult rats"

Journal of Pharmacology and Experimental Therapeutics, 309:984-992

Regulační informace a podmínky skladování

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Przeznaczenie

Produkt jest surowcem chemicznym przeznaczonym wyłącznie do zastosowań badawczych, naukowych i analitycznych in vitro. Nie jest przeznaczony do użytku ludzkiego ani weterynaryjnego, w tym w celach diagnostycznych, terapeutycznych, profilaktycznych lub żywieniowych.

Obchodzenie się z substancją

  • Pracuj w warunkach laboratoryjnych zgodnych z zasadami dobrej praktyki laboratoryjnej (GLP).
  • Stosuj odpowiednie środki ochrony indywidualnej: rękawice nitrylowe, okulary ochronne, fartuch laboratoryjny.
  • Unikaj wdychania pyłu oraz kontaktu ze skórą i błonami śluzowymi.
  • Pracuj w dobrze wentylowanym pomieszczeniu.

Klasyfikacja regulacyjna

Produkt nie jest sklasyfikowany jako substancja niebezpieczna zgodnie z rozporządzeniem CLP (WE) nr 1272/2008. Oferowany jest jako odczynnik chemiczny w ramach obowiązujących w Unii Europejskiej przepisów dotyczących substancji chemicznych (REACH, CLP). Nie stanowi produktu leczniczego, suplementu diety, wyrobu medycznego ani kosmetyku w rozumieniu obowiązujących przepisów prawa.

Utylizacja

Substancję niewykorzystaną należy utylizować zgodnie z lokalnymi przepisami dotyczącymi odpadów chemicznych. W warunkach laboratoryjnych: neutralizować i utylizować wraz z odpadami laboratoryjnymi. Nie wylewać do kanalizacji.

Informacje regulacyjne

Produkt oferowany jest zgodnie z obowiązującymi przepisami Unii Europejskiej dotyczącymi substancji chemicznych (REACH, CLP) oraz prawem polskim w zakresie obrotu odczynnikami chemicznymi i materiałami badawczymi. Pełne warunki sprzedaży oraz klasyfikacja produktu zawarte są w Regulaminie Sklepu.

Dokonując zakupu, Klient potwierdza zapoznanie się z powyższymi informacjami oraz akceptuje postanowienia Regulaminu.

Kontakt w sprawach bezpieczeństwa

W przypadku pytań dotyczących obchodzenia się z produktem lub informacji regulacyjnych: kontakt@peptydy-sklep.com.

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M.B. 15 stycznia 2026

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Související články

Často kladené otázky

CJC-1295 NO DAC (also known as Modified GRF 1-29) is a synthetic 29-amino acid analog of GHRH with four amino acid substitutions that confer resistance to DPP-IV enzymatic degradation. "NO DAC" indicates it lacks the Drug Affinity Complex used in some other formulations. CAS: 863288-34-0.

The NO DAC version has a shorter half-life but produces more physiological pulsatile release patterns in research models. The DAC version includes a maleimidopropionic acid linker for albumin binding, extending its half-life but creating a more sustained release profile.

Store lyophilized CJC-1295 NO DAC at -20°C to -80°C. After reconstitution, store at 2-8°C and use within 30 days.

CJC-1295 NO DAC is available as a 5 mg lyophilized vial.

CJC-1295 NO DAC acts on the GHRH receptor while Ipamorelin acts on the GHS-R1a (ghrelin) receptor. In research, these two pathways are studied for their synergistic effects on the somatotropic axis. We offer both peptides individually and as a ready-made blend.

CJC-1295 NO DAC 99,00 PLN