How to Reconstitute CJC-1295 (No DAC) (Lab Mixing Guide + Math)

At a Glance: Laboratory Reconstitution Quick Guide

Reconstituting lyophilized CJC-1295 (No DAC) requires precise volumetric math, sterile laboratory technique, and proper diluent handling. To maintain structural integrity, always introduce bacteriostatic water slowly along the interior glass wall of the vial rather than shooting liquid directly onto the lyophilized peptide cake.

Never shake the vial after adding diluent. Shaking causes shear forces that break down delicate peptide bonds, inducing aggregation or denaturation. Gently swirl the solution between your fingertips until the cake completely dissolves into a clear, particle-free liquid.

Calculate working concentration using the simple formula: Concentration (mg/mL) = Mass (mg) ÷ Volume (mL). For instance, adding 2 mL of bacteriostatic water to a 5 mg vial yields a stock concentration of 2.5 mg/mL (2,500 mcg/mL).

Store reconstituted CJC-1295 (No DAC) solutions strictly under refrigeration at 2°C to 8°C (36°F to 46°F) and protect them from direct light exposure. Reconstituted solutions should be utilized within standard laboratory trial windows to prevent degradation.

What Is CJC-1295 (No DAC) and How Does It Function in Preclinical Research?

CJC-1295 (No DAC)—also known in scientific literature as Modified GRF 1-29—is a synthetic 29-amino-acid peptide analog of Growth Hormone-Releasing Hormone (GHRH). It contains specific amino acid substitutions at positions 2, 8, 15, and 27 that enhance enzymatic resistance against dipeptidyl peptidase-IV (DPP-IV), extending its biological half-life compared to native GHRH (1-29).

In preclinical model systems, cjc 1295 acts as a selective agonist at the GHRH receptor located on pituitary somatotropes. Binding triggers a signal transduction cascade that stimulates the episodic release of endogenous growth hormone (GH), subsequently driving downstream hepatic secretion of insulin-like growth factor 1 (IGF-1).

Because it lacks the Drug Affinity Complex (DAC) maleimido derivative, cjc no dac does not bind covalently to circulating plasma albumin. Consequently, it exhibits a shorter plasma half-life (approximately 30 minutes in animal models) compared to its DAC-bound counterpart, mimicking the natural pulsatile secretory patterns of physiological GHRH. Researchers frequently study this compound in assays evaluating pituitary secretagogue response, cellular tissue repair, extracellular matrix synthesis, and protein translation kinetics.

Required Laboratory Equipment and Materials for Reconstitution

Before beginning the reconstitution protocol for research compounds, prepare a clean, sanitized laminar flow hood or dedicated biosafety workbench. Gather all necessary reagents, personal protective equipment (PPE), and fluid transfer tools.

The standard equipment bill of materials includes:

1. High-purity lyophilized peptide: A verified vial of CJC-1295 (No DAC) stored in solid lyophilized cake form.

2. Reconstitution diluent: Standard 0.9% benzyl alcohol preserved Bacteriostatic Water for Injection (BAC water) or sterile 0.9% sodium chloride solution, depending on protocol specifications.

3. Volumetric transfer tools: Sterile lab-grade syringes equipped with 21G to 25G needles or calibrated mechanical pipettes for precise volume aspiration.

4. Surface disinfection: 70% isopropyl alcohol wipes or spray to sanitize vial septa and working surfaces.

5. Waste management: Biohazard sharps container for immediate disposal of used needles and glass components.

Ensuring all materials are fully prepared prior to septa puncture minimizes atmospheric contamination risk and preserves the structural purity of the compound during solubilization.

How to Mix CJC-1295 (No DAC): Step-by-Step Laboratory Protocol

Follow this standardized laboratory protocol when learning how to mix cjc-1295 (no dac) to achieve optimal solution clarity, precise stoichiometry, and complete dissolution without peptide fragmentation.

Step 1: Sanitize Work Surface and Septa. Put on clean nitrile gloves. Thoroughly wipe down the biosafety bench with 70% isopropyl alcohol. Remove the protective flip-off cap from the CJC-1295 (No DAC) vial and wipe the rubber septum with a fresh alcohol swab. Wipe the top of the bacteriostatic water vial as well. Allow both septa to air dry completely for 30 seconds.

Step 2: Aspirate Diluent. Equilibrate the pressure inside the diluent container by pulling air into the syringe equal to the targeted diluent volume. Insert the needle into the diluent vial, invert, depress the plunger to equalize pressure, and draw up the exact measured volume of bacteriostatic water (e.g., 2.0 mL).

Step 3: Introduce Diluent Down the Wall. Carefully insert the needle through the center of the CJC-1295 (No DAC) rubber stopper at a slight angle. Press the plunger down slowly, aiming the fluid stream against the internal glass wall of the vial. Never blast diluent directly onto the lyophilized powder cake, as impact force can fragment tertiary peptide structures.

Step 4: Equalize Internal Vial Pressure. Before withdrawing the needle, allow any excess air pressure inside the sealed glass vial to equalize into the empty syringe barrel to prevent vacuum resistance or liquid spewing upon withdrawal.

Step 5: Swirl to Dissolve (Do Not Shake). Withdraw the needle. Gently roll the vial between the palms of your hands or swirl it in a slow circular motion on the benchtop. Allow 2–5 minutes for full dissolution. Inspect visually under light: the solution must be completely clear, colorless, and free of floating particles or turbidity.

Concentration Mathematics and Dilution Formulas

Accurate concentration math is vital when preparing stock solutions for quantitative assays. Calculating concentration requires dividing total lyophilized mass by total liquid diluent volume.

The standard concentration formula is: C = M / V, where C = Concentration (mg/mL), M = Mass of active peptide in milligrams (mg), and V = Volume of reconstituted diluent in milliliters (mL). To convert concentration to micrograms per milliliter (mcg/mL), multiply the result in mg/mL by 1,000.

Refer to the worked reference table below for common reconstitution volumes using 2 mg, 5 mg, and 10 mg laboratory vials of cjc no dac:

Vial Size (Mass) | Diluent Added (BAC Water) | Final Stock Concentration | Microgram Equivalence --- | --- | --- | --- 2 mg | 1.0 mL | 2.0 mg/mL | 2,000 mcg/mL 2 mg | 2.0 mL | 1.0 mg/mL | 1,000 mcg/mL 5 mg | 2.5 mL | 2.0 mg/mL | 2,000 mcg/mL 5 mg | 5.0 mL | 1.0 mg/mL | 1,000 mcg/mL 10 mg | 2.5 mL | 4.0 mg/mL | 4,000 mcg/mL 10 mg | 5.0 mL | 2.0 mg/mL | 2,000 mcg/mL

For example, if a researcher requires a 100 mcg sample volume for a microplate assay from a 2.0 mg/mL stock solution, the required liquid micropipette volume is calculated as: Volume = Target Mass (0.1 mg) ÷ Stock Concentration (2.0 mg/mL) = 0.05 mL (50 microliters).

Comparing CJC-1295 (No DAC) to Related GHRH and GHRP Compounds

In secretagogue and endocrine research, investigators frequently compare GHRH analogs against GHRH variants with extended half-lives and Ghrelin receptor agonists (GHRPs). Selecting the appropriate compound depends on targeted receptor pathways, desired pulse duration, and half-life dynamics.

Criteria evaluated across primary research analogs include:

• CJC-1295 (No DAC): Selective GHRH receptor agonist. Modified GRF 1-29 structure. Plasma half-life ~30 minutes. Mimics physiological GHRH release without sustained baseline elevation.

• CJC-1295 (With DAC): GHRH receptor agonist conjugated with Drug Affinity Complex. Covalently binds serum albumin. Half-life extended to ~6-8 days in research models. Provides continuous baseline stimulation.

• Ipamorelin: Selective Growth Hormone Secretagogue Receptor (GHSR-1a) agonist. Minimal effect on cortisol or prolactin secretion. Often co-studied with GHRH analogs in cjc ipamorelin dual-agonist research protocols.

• Sermorelin: Truncated 29-amino-acid native GHRH sequence without DPP-IV protective modifications. Shorter biological half-life (~11-12 minutes). Useful for studying baseline GHRH signaling.

When designing multi-pathway experiments, researchers often combine GHRH agonists like CJC-1295 (No DAC) with GHRPs like Ipamorelin or GHRP-2 to evaluate synergistic growth hormone release across dual receptor pathways. Browse our complete catalog of research peptides to review verified secretagogues for comparative studies.

Storage, Stability, and Handling Protocols for Reconstituted Solutions

Proper temperature control and storage conditions dictate the chemical stability and lifespan of reconstituted peptide solutions. Unreconstituted (lyophilized) peptide vials are stable at freezer temperatures (-20°C to -80°C) for up to 24 months, or at room temperature (under 25°C) for short transit periods.

Once reconstituted with 0.9% benzyl alcohol preserved bacteriostatic water, store the liquid solution under strict refrigeration between 2°C and 8°C (36°F to 46°F). Under refrigerated conditions, preserved CJC-1295 (No DAC) maintains chemical stability for approximately 21 to 28 days.

Key stability factors to enforce in the laboratory:

1. Avoid Repeated Freeze-Thaw Cycles: Freezing liquid reconstituted solutions causes ice crystal formation that cleaves polypeptide backbones. If long-term liquid storage is required, aliquot reconstituted solution into single-use micro-tubes prior to freezing.

2. Light Sensitivity: Protect reconstituted vials from prolonged UV exposure by storing vials in dark boxes or aluminum foil wrappings.

3. Solvent Choice: Using plain sterile water for injection (without benzyl alcohol) drastically reduces solution shelf-life to less than 24 hours due to bacterial growth risks and rapid hydrolysis.

Vetting Peptide Suppliers: Red Flags in Lyophilized Compound Sourcing

Inconsistent peptide quality, unverified purity levels, and batch-to-batch variations ruin assay reproducibility. When evaluating vendors for critical preclinical trial reagents, laboratory buyers must apply rigorous verification criteria.

Primary Red Flags to Avoid When Sourcing Peptides:

• Lack of Lot-Specific COAs: Avoid suppliers that provide static, generic Certificates of Analysis rather than lot-matched testing reports.

• Missing Endotoxin Testing: High purity mass spectrometry alone does not guarantee low endotoxin levels. Solubilized peptides contaminated with lipopolysaccharides (LPS) trigger cell death or inflammatory interference in culture assays.

• Ambiguous Synthesis Sourcing: Vendors that fail to disclose synthesis methods or purification standards often ship peptide preparations containing residual TFA salts or truncated sequence impurities.

• Overly Cheap Bulk Pricing: Dramatically underpriced peptides usually indicate unpurified crude synthesis or incorrect mass fill quantities.

Every lot of cjc 1295 supplied by PX1 Research undergoes stringent USA synthesis oversight, full High-Performance Liquid Chromatography (HPLC) purity verification exceeding 99%, Mass Spectrometry (MS) identity confirmation, and quantitative endotoxin testing. Access analytical details via our research documentation hub.

Ordering CJC-1295 (No DAC) from PX1 Research

When purchasing reagents for tissue repair and endocrine research, reliable supply chains and fast delivery are essential to maintain project schedules. PX1 Research serves academic institutions, contract research organizations (CROs), and private laboratories with fully verified reference materials.

What you receive with your PX1 Research order:

• Standardized 2 mg and 5 mg lyophilized glass vials fitted with vacuum-sealed rubber septa and protective flip caps.

• Complete lot-matched documentation featuring third-party HPLC, MS, and bacterial endotoxin analytical reports.

• Rapid dispatch: Orders placed before 3 PM EST Monday through Friday ship same-day from primary fulfillment hubs in California and Arizona.

• Tracked, secure domestic transit with temperature-shielded protective packaging to guarantee structural integrity upon arrival.

For custom synthesis parameters, bulk volume pricing, or lab support queries, explore our wholesale pricing access or proceed directly to order CJC-1295 (No DAC) 5 mg vials to secure research-grade inventory.