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Research compendium

CJC-1295 No-DAC: research reference

CJC-1295 No-DAC is a tetrasubstituted analog of the 1-29 fragment of growth hormone-releasing hormone, without the albumin affinity complex. In preclinical models, it binds to the GHRH receptor and acts as an agonist of that pathway in the anterior pituitary. It has been investigated in models of somatotropic axis signaling in rodent studies.

Input signal and axis response

Distinguish local mechanism from integrated effect. A whole-axis result needs its time context and cannot be summarized by a receptor name.

  • Which level of the endocrine axis was manipulated and which was measured?
  • Does the readout depend on pulses, time or system feedback?
  • Are molecular forms or the preparation unambiguously described?

Mechanism described in the literature

Substitutions at positions 2, 8, 15 and 27 reduce enzymatic degradation of the sequence in in vitro studies. Activation of the GHRH receptor increases cyclic AMP in cellular models.

Declared technical information

The purity value is a product-label specification, not an assay result. A batch result can only be asserted from that batch’s certificate.

FieldDeclared value
Chemical name[D-Ala2, Gln8, Ala15, Leu27]-GHRH(1-29) amide
SequenceTyr-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 formulaNot available
Molecular weightNot available
CAS number863288-34-0
Physical formLyophilized powder
AppearanceWhite to off-white solid
Purity specificationDeclared in the batch certificate
IdentityDeclared in the batch certificate
SolubilitySoluble in sterile water and bacteriostatic water
Storage−20 °C, protected from light
Stability after reconstitutionKeep refrigerated at 2–8 °C and use within the period defined by the laboratory protocol

Catalog names and search terms

These names help identify the catalog entry. A descriptive label is not evidence of efficacy, and structural identity still requires appropriate documentation.

  • Mod GRF (1-29)
  • CJC-1295 without DAC
  • Tetrasubstituted GHRH(1-29)

Catalog classification

GHRH analog

Laboratory handling

Reconstitution: Laboratory procedure: allow the closed vial to reach room temperature, disinfect the septum and slowly transfer the diluent against the inner wall of the vial. Do not shake; gently swirl the vial until fully dissolved. Record the volume, diluent and date in the batch log.

Storage: Sealed vial of lyophilized material: store at −20 °C, protected from light and moisture. Avoid repeated freeze-thaw cycles of reconstituted material; aliquot when the experimental design permits.

Personal protective equipment: Handle in a clean work area with a lab coat, nitrile gloves and eye protection. Dispose of vials, tips and sharps according to the laboratory waste procedure.

Scope of the literature

The bibliography brings together work on the analog with DAC and analytical studies that distinguish the two variants. PMID 34665524 includes CJC-1295 without DAC in in vitro research; it does not establish its exposure in humans. Findings for the variant with DAC do not carry over to this preparation.

CJC-1295 without DAC in analytical literature

The 2021 GHRH-analog detection paper included CJC-1295 and CJC-1295 with DAC as distinct materials. It combined in vitro metabolism with analytical identification procedures, asking how to recognize the compounds and their derivatives. Sources: PMID 34665524.

What compound identification means

An analytical procedure must distinguish the target material’s signal from other sample signals. The cited in vitro research used reference materials to develop detection of GHRH analogs and metabolites. Analytical identification addresses a different question from biological efficacy. Sources: PMID 34665524.

Why DAC changes interpretation of a reference

The 2006 endocrine paper on pulsatility explicitly describes albumin binding by the investigated analog. A No-DAC record cannot adopt its temporal findings merely because part of the names matches. The full experimental identity matters more than a shared heading. Sources: PMID 17018654.

Detection studies and exposure studies

In vitro metabolism and participant follow-up are different designs. The analytical publication alone provides no human half-life for this preparation. A laboratory detection window is not converted here into an action period or frequency of use. Sources: PMID 34665524.

Comparing documentation for this reference

First check that both documents name the same variant, then distinguish the identification method from the result for the specific sample. A paper describes its experiment; the batch certificate should identify the material received. Neither document replaces the other. Sources: PMID 34665524.

Questions and answers

How is CJC-1295 No-DAC supplied?

CJC-1295 No-DAC is supplied in a sealed vial containing the quantity indicated for the selected variant, with its batch identifier printed on the label.

How is CJC-1295 No-DAC stored in the laboratory?

Store the closed vial at −20 °C, protected from light and moisture. See the laboratory handling section of this page for the complete procedure.

Sources

  1. Human growth hormone-releasing factor (hGRF)1-29-albumin bioconjugates activate the GRF receptor on the anterior pituitary in rats: identification of CJC-1295 as a long-lasting GRF analog — Endocrinology (2005); PMID 15817669; DOI 10.1210/en.2004-1286
  2. Human growth hormone-releasing factor (hGRF)1-29-albumin bioconjugates activate the GRF receptor on the anterior pituitary in rats: identification of CJC-1295 as a long-lasting GRF analog — Endocrinology (2005); PMID 15817669; DOI 10.1210/en.2004-1286
  3. The emerging landscape of performance-enhancing peptides modulating GH-IGF1 axis: bridging the gap between clinical evidence and patient self-administration — Front Endocrinol (Lausanne) (2026); PMID 42395176; DOI 10.3389/fendo.2026.1822475
  4. The emerging landscape of performance-enhancing peptides modulating GH-IGF1 axis: bridging the gap between clinical evidence and patient self-administration — Front Endocrinol (Lausanne) (2026); PMID 42395176; DOI 10.3389/fendo.2026.1822475
  5. Advances in the detection of growth hormone releasing hormone synthetic analogs — Drug Test Anal (2021); PMID 34665524; DOI 10.1002/dta.3183
  6. Advances in the detection of growth hormone releasing hormone synthetic analogs — Drug Test Anal (2021); PMID 34665524; DOI 10.1002/dta.3183
  7. Glycine-modified growth hormone secretagogues identified in seized doping material — Drug Test Anal (2019); PMID 30136411; DOI 10.1002/dta.2489
  8. Glycine-modified growth hormone secretagogues identified in seized doping material — Drug Test Anal (2019); PMID 30136411; DOI 10.1002/dta.2489
  9. Identification of CJC-1295, a growth-hormone-releasing peptide, in an unknown pharmaceutical preparation — Drug Test Anal (2010); PMID 21204297; DOI 10.1002/dta.233
  10. Identification of CJC-1295, a growth-hormone-releasing peptide, in an unknown pharmaceutical preparation — Drug Test Anal (2010); PMID 21204297; DOI 10.1002/dta.233
  11. Pulsatile secretion of growth hormone (GH) persists during continuous stimulation by CJC-1295, a long-acting GH-releasing hormone analog. — J Clin Endocrinol Metab (2006); PMID 17018654; DOI 10.1210/jc.2006-1702
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