Laboratory reference guide

CJC-1295 No-DAC vs DAC: Mod GRF 1-29 naming and structural distinctions

Why "CJC-1295 No-DAC" is a market designation for Mod GRF (1-29), distinct from the CJC-1295 described in primary literature.

Research use only. The information below concerns laboratory reference materials for in-vitro research and makes no medical, therapeutic, diagnostic, cosmetic or performance claims.

The primary literature uses “CJC-1295” for a long-acting, albumin-binding growth-hormone-releasing-hormone analogue. Peptide catalogues also use “CJC-1295 No-DAC” for a different, unconjugated material. These names should not be treated as two formally defined forms of one reference standard.

CJC-1295 (with DAC)

The compound named CJC-1295 in primary literature is a tetrasubstituted GRF(1-29) analogue with a reactive group on its C-terminal lysine designed to bind covalently to albumin. That modification changes its molecular formula, mass and identifiers.

Mod GRF (1-29), sold as “CJC-1295 No-DAC”

“CJC-1295 No-DAC” is a market designation generally used for the unconjugated, tetrasubstituted 29-residue analogue Mod GRF (1-29). The exact sequence and termini, not the alias alone, must define the reference material.

Matching the reference standard

The two materials are not interchangeable: their structures, masses and identifiers differ, so the vial and COA must match the intended molecule. The VERIPHASE blend uses the market-facing name CJC-1295 No-DAC and indexes Mod GRF (1-29) as the corresponding identity alias.

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