peptides
CJC-1295 With DAC
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About this product
CJC-1295 With DAC — Peptide Overview
CJC-1295 With DAC is a synthetic, chemically modified peptide based on the first 29 amino acids of human growth hormone-releasing hormone, abbreviated GHRH. Its structure includes selected amino acid substitutions and an additional modified lysine residue.
DAC stands for Drug Affinity Complex and identifies a chemical modification incorporated into the molecule. The designation “With DAC” is an essential part of the compound name, distinguishing this structure from the peptide commonly described as CJC-1295 Without DAC or modified GRF (1–29).
Structure and Composition
CJC-1295 With DAC contains a modified 29-residue peptide backbone extended by a lysine at position 30. This additional lysine carries a maleimidopropionyl group associated with the DAC designation.
The peptide backbone includes substitutions at positions 2, 8, 15 and 27 relative to the corresponding human GHRH sequence. Together with the modified terminal lysine, these features define the compound’s chemical structure.
The complete molecule therefore contains 30 amino acid residues and an attached chemical group. Its molecular formula and molecular weight account for the entire DAC-containing structure.
CJC-1295 With DAC Compound Information
| Property | Details |
| Compound name | CJC-1295 With DAC |
| Alternative names | CJC-1295 DAC; DAC |
| Classification | Chemically modified synthetic peptide |
| Amino acid count | 30 residues, including the additional modified lysine |
| Structural basis | Modified GHRH (1–29) backbone |
| DAC abbreviation | Drug Affinity Complex |
| Structural feature | Maleimidopropionyl group attached through lysine at position 30 |
| CAS number — free-base form | 446262-90-4 |
| Molecular formula — free-base form | C₁₆₅H₂₆₉N₄₇O₄₆ |
| Molecular weight — free-base form | Approximately 3647.2 g/mol |
Understanding Compound Specifications
CJC-1295 With DAC and the non-DAC peptide have different chemical structures. Their names, molecular weights and identifying information should be kept separate when comparing product specifications or reference records.
The formula and molecular weight above describe the DAC-containing molecule in its free-base form. Acetate and other salt forms require their own accompanying specifications, including identification of the counterion.
Compound identity and batch quality are separate pieces of information. Structural identifiers establish which peptide is being described, while batch-specific analytical records document the characteristics measured in a particular sample.
