MOD-GRF (1-29)
A clarification profile on Mod GRF 1-29, the tetrasubstituted GHRH often mislabeled as "CJC-1295 No DAC".
MOD-GRF (1-29)
MOD-GRF (1-29) is the correct chemical name for the peptide widely sold as "CJC-1295 No DAC".
They are the same compound.
The Naming Confusion
- GRF 1-29 (Sermorelin): The biological fragment. Half-life is ~5 minutes (too short).
- Mod GRF 1-29: Scientists swapped 4 amino acids in the GRF 1-29 chain. This "Tetrasubstitution" extended the half-life to 30 minutes, making it effective.
- CJC-1295: Originally, this referred to Mod GRF + a DAC complex added to it.
- Marketing Error: Peptide vendors started selling Mod GRF 1-29 as "CJC-1295 without the DAC," which is chemically confusing, but the name stuck.
Quick Specs
| Property | Value |
|---|---|
| Active Compound | Tetrasubstituted GRF 1-29 |
| Half-Life | ~30 Minutes |
| Mechanism | GHRH Agonist |
| Administration | Subcutaneous (SubQ) |
Dosing & Usage
See the guide for CJC-1295 (No DAC).
- Standard Dose: 100mcg.
- Standard Stack: Mod GRF + Ipamorelin.
Why the Name Matters:
If you buy "Sermorelin," you are getting the non-modified version (short half-life). If you buy "Mod GRF 1-29," you are getting the modified version (longer half-life). Mod GRF is generally superior for bodybuilding purposes due to the better stability.