# CJC-1295 Research — Full Context
> CJC-1295 research — Modified GRF(1-29) with and without DAC, GHRH receptor agonism, growth hormone pulsatility, IGF-1 elevation, and combination protocol research with Ipamorelin.

## About This Site
CJC-1295 Research is part of the System Peptides Research Network — a collection of 21 specialized peptide research resources. Each site focuses on a specific compound or research area, providing peer-reviewed content sourced exclusively from PubMed-indexed publications. This site is an educational resource and does not sell products directly. Research-grade peptides are available at researchvials.com.

## Site Identity
- Domain: https://cjc1295research.com
- Network: System Peptides Research Network
- Parent Store: https://researchvials.com
- Wikidata: https://www.wikidata.org/wiki/Q139376131
- ORCID: https://orcid.org/0009-0004-9811-6147

## Research Focus Peptides

### CJC-1295 Without DAC (Modified GRF 1-29) (CJC-1295 no DAC, Mod GRF 1-29, Modified GRF(1-29))

- CAS: 863288-34-0
- Molecular Weight: 3367.97 g/mol
- 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
- Mechanism: CJC-1295 without DAC, also known as Modified GRF(1-29), is a synthetic analogue of the first 29 amino acids of growth hormone-releasing hormone (GHRH) with four amino acid substitutions designed to improve metabolic stability. The modifications (Ala at position 2 to D-Ala, Asn at position 8 to Gln, ...
- Research Areas: Growth Hormone Release, GHRH Receptor, Body Composition, Anti-Aging

Key Findings:
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### CJC-1295 With DAC (Drug Affinity Complex) (CJC-1295 DAC, CJC-1295 with Drug Affinity Complex)

- CAS: 863288-34-0
- Molecular Weight: ~3647.28 g/mol
- Sequence: Modified GRF(1-29) with maleimidopropionic acid-DAC conjugate
- Mechanism: CJC-1295 with DAC is the albumin-conjugating version of CJC-1295, featuring a Drug Affinity Complex (DAC) — a reactive maleimidopropionic acid group that forms a covalent bond with serum albumin after subcutaneous injection. This albumin conjugation dramatically extends the circulating half-life fro...
- Research Areas: Growth Hormone Release, Sustained GHRH Agonism, Body Composition, IGF-1 Research

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## Articles

### CJC-1295 + Ipamorelin: The Combination Research Protocol

URL: https://cjc1295research.com/articles/cjc-1295-ipamorelin-combination-research-protocol/

### Growth Hormone Releasing Pathways: GHRH vs GHS-R Mechanisms

URL: https://cjc1295research.com/articles/growth-hormone-releasing-pathways-ghrh-vs-ghs-r/

### Growth Hormone Secretagogues: A Complete Research Guide

URL: https://cjc1295research.com/articles/growth-hormone-secretagogues-complete-research-guide/

### Ipamorelin: The Selective Growth Hormone Secretagogue

URL: https://cjc1295research.com/articles/ipamorelin-selective-growth-hormone-secretagogue/

### What Is Tesamorelin? GHRH Analog Research Review

URL: https://cjc1295research.com/articles/what-is-tesamorelin-ghrh-analog-research/


## Research Applications

- Lean Mass & Body Composition: Frequently cited as the best overall stack (with Ipamorelin) for increasing growth hormone, promoting lean muscle growth and fat metabolism without significantly increasing hunger or cortisol.

- Weight Loss & Fat Metabolism: CJC-1295/Ipamorelin combination increases the body's natural growth hormone production, helping reduce fat while maintaining or building lean muscle mass.

- Sleep Optimization: Growth hormone releasing peptides stimulate GH release which peaks during deep sleep, leading to more restorative rest, better tissue repair, and increased energy.

- Recovery & Healing: Growth hormone secretagogues boost natural GH levels, which speeds up tissue repair and reduces recovery time between workouts in preclinical models.

- Anti-Aging & Longevity: Often used together with Ipamorelin to boost natural growth hormone production, aiding in better sleep, fat loss, and muscle repair — key anti-aging markers.


## Frequently Asked Questions

Q: What is CJC-1295?
A: CJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH) consisting of the first 29 amino acids of GHRH with four amino acid substitutions that improve stability and DPP-IV resistance. It comes in two forms: without DAC (short-acting) and with DAC (Drug Affinity Complex, long-acting...

Q: What is the difference between CJC-1295 with and without DAC?
A: CJC-1295 without DAC (Mod GRF 1-29) has a half-life of ~30 minutes, producing acute GH pulses. CJC-1295 with DAC binds albumin via a maleimidopropionic acid linker, extending the half-life to ~8 days and producing sustained GH elevation.

Q: Why is CJC-1295 combined with Ipamorelin?
A: CJC-1295 (GHRH agonist) and Ipamorelin (ghrelin receptor agonist) target complementary receptors on pituitary somatotrophs. The combination produces synergistic GH release — greater than either compound alone — while maintaining Ipamorelin's clean cortisol/prolactin-sparing profile.


## Interactive Tools
- Research Calculator: https://cjc1295research.com/tools/dosing-calculator/
  88+ peptide protocols with reconstitution calculator, dosing phases, mechanism of action, half-life data, administration guidance, side effects, compatible stacks, per-protocol FAQs, and interactive syringe visualization. Supports blends with per-component injection breakdowns.

## Research Network (Sister Sites)

- Tesamorelin Research (tesamorelin-research.com): Tesamorelin GHRH Analog Research — Growth Hormone & Metabolism

- Ipamorelin Research (ipamorelin-research.com): Ipamorelin Research — Selective Growth Hormone Secretagogue

- AOD-9604 Research (aod9604research.com): AOD-9604 Research — hGH Fragment for Fat Metabolism Studies

- RETA Research (reta-research.com): RETA Peptide Research — Comprehensive Peptide Science & Analysis


## Quality Standards
- All peptides referenced are 98%+ purity, HPLC verified
- Independent third-party Certificates of Analysis (COAs) available
- 100% USA-based: managed, tested, and shipped domestically
- Cold-chain shipping with temperature-controlled logistics
- Peer-reviewed content with direct PubMed citations

## Content Policy
All content is for educational and research purposes only. Products referenced are for laboratory research use only (Research Use Only — RUO). Not approved by the FDA for human consumption, veterinary use, or any therapeutic purpose. All references to research findings describe preclinical laboratory studies, not clinical recommendations. Consult a licensed healthcare provider for any medical questions.

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