Target Solvent
Bacteriostatic Water (0.9% Benzyl Alcohol)
Store refrigerated
Validated Laboratory Standard
Revision 1 · Lyophilized Solid Powder
Full-Length 39-Amino-Acid Corticotropin Reference Standard. Formulated for in-vitro research and laboratory analytical validation.
Full-Length 39-Amino-Acid Corticotropin Reference Standard. Formulated for in-vitro research and laboratory analytical validation.
ACTH 1-39 (Adrenocorticotropic Hormone) is the full-length 39-amino-acid anterior pituitary polypeptide hormone responsible for regulating adrenal cortical steroidogenesis. ACTH binds with high affinity to melanocortin receptor type 2 (MC2R), stimulating cholesterol side-chain cleavage to produce glucocorticoids, mineralocorticoids, and androgens. In experimental neurology and neuroimmunology, it serves as the key probe for the hypothalamic-pituitary-adrenal (HPA) axis.
Target Solvent
Bacteriostatic Water (0.9% Benzyl Alcohol)
Store refrigerated
Diluent Ratio
2 mL per 5 mg (2.5 mg/mL)
Slow laminar stream against vial wall; avoid vigorous shaking.
Lyophilized Storage
Store at -20°C.
Desiccated and protected from thermal spikes
Liquid Stability
Store at 2°C–8°C.
Refrigerated and light-protected
Pharmacokinetics / Half-Life
~15 to 20 Minutes (Plasma half-life)
Typical protocol duration: Acute to 4 Weeks; Washout: 2 Weeks
| Standard Compound Mass | 5 mg active per vial |
| Recommended Diluent | Bacteriostatic Water (0.9% Benzyl Alcohol) |
| Diluent Volume Added | 2.0 mL |
| Resulting Concentration | 2.5 mg/mL |
| Syringe Volumetric Scale | U-100 Syringe (100 units = 1.0 mL | 1 unit = 25.0 mcg (0.01 mL)) |
Integrated reconstitution calculator and calibrated volumetric micro-plunger simulation.
Benchmark protocols from peer-reviewed clinical trials & institutional investigational programs.
| Escalation Stage & Phase | Target Dose | U-100 Mark (5mg / 2.0mL) | Cadence | Syringe Sync |
|---|---|---|---|---|
| In-Vitro Assay Titration Schedule (Day 1) | 50 mcg | 2.0 Units(0.02 mL) | 1x Daily | |
| In-Vitro Assay Titration Schedule (Days 2–7) | 125 mcg | 5.0 Units(0.05 mL) | 1x Daily | |
| In-Vitro Assay Titration Schedule (Days 8–14) | 250 mcg | 10.0 Units(0.10 mL) | 1x Daily |
| Research Dose | Volume (mL) | U-100 Syringe Graduation Mark |
|---|---|---|
| 50 mcg | 0.020 mL | 2 Units 2 units |
| 125 mcg | 0.050 mL | 5 Units 5 units |
| 250 mcg | 0.10 mL | 10 Units 10 units |
| Research Dose | Calibrated Volume | U-100 Syringe Units | Graduation Description |
|---|---|---|---|
| 50 mcg | 0.02 mL (20 µL) | 2 Units | 2 units |
| 125 mcg | 0.05 mL (50 µL) | 5 Units | 5 units |
| 250 mcg | 0.1 mL (100 µL) | 10 Units | 10 units |
ISO 8537 Sterile Insulin Syringe Standard · Optical Meniscus Resolution & Volumetric Parallax Engineering
Detachable needles leave significant fluid trapped in the plastic hub collar. In peptide protocols, this causes substantial loss of active ingredient per administration.
| Barrel Capacity | Graduation Interval | Volume per Tick | Hub Dead-Space | Needle Spec | Suitability for 2 Units |
|---|---|---|---|---|---|
| 0.3 mL (30 Units)BEST FIT | 0.5 Unit | 5 µL (0.005 mL) | < 0.4 µL | 31G × 5/16" (8mm) Integrated Ultra-Fine | ✓ Accommodates 2 units |
| 0.5 mL (50 Units) | 1 Unit | 10 µL (0.010 mL) | < 0.8 µL | 30G–31G × 5/16" (8mm) Integrated | ✓ Accommodates 2 units |
| 1 mL (100 Units) | 2 Unit | 20 µL (0.020 mL) | < 2.1 µL | 29G–30G × 1/2" (12.7mm) Integrated | ✓ Accommodates 2 units |
Viewing the syringe from an angle introduces a 1.0–2.5 unit parallax error. Always raise the barrel to direct eye level against a high-contrast white background. Align the front edge of the top black plunger seal ring with the target line.
Standard 5/16" (8mm) laboratory dispensing needles are calibrated for direct 90° fluid transfer into target analytical matrix vials. If utilizing 1/2" (12.7mm) cannulas in deep laboratory vessels, introduce at a 45° angle to avoid contact with vessel sidewalls.
Stoichiometric supply planning, sequential reconstitution cadence, and itemized consumables BOM for ACTH 1-39.
Do NOT reconstitute all 5 vials simultaneously. Reconstitute one vial at a time as the active protocol requires. Once reconstituted with Bacteriostatic Water USP, a vial maintains stability for 28 days at +2°C to +8°C. Remaining unopened vials should be preserved in solid lyophilized cake form at -20°C to prevent hydrolysis and oxidation.
| Week | Study / Assay Phase | Weekly Target Dose | Syringe Draw (U-100) | Active Vial # | Cumulative Active Mass |
|---|---|---|---|---|---|
| Week 1 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #1(3.25mg rem) | 1.8 mg / 21.0 mg |
| Week 2 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #1(1.5mg rem) | 3.5 mg / 21.0 mg |
| Week 3 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #2(3.25mg rem) | 5.3 mg / 21.0 mg |
| Week 4 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #2(1.5mg rem) | 7.0 mg / 21.0 mg |
| Week 5 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #3(3.25mg rem) | 8.8 mg / 21.0 mg |
| Week 6 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #3(1.5mg rem) | 10.5 mg / 21.0 mg |
| Week 7 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #4(3.25mg rem) | 12.3 mg / 21.0 mg |
| Week 8 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #4(1.5mg rem) | 14.0 mg / 21.0 mg |
| Week 9 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #5(3.25mg rem) | 15.8 mg / 21.0 mg |
| Week 10 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #5(1.5mg rem) | 17.5 mg / 21.0 mg |
| Week 11 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #6(3.25mg rem) | 19.3 mg / 21.0 mg |
| Week 12 | Full Challenge (Days 8–14) | 250 mcg(7x/wk) | 10 Units(0.10 mL) | Vial #6(1.5mg rem) | 21.0 mg / 21.0 mg |
Study duration: Acute to 4 Weeks · Washout: 2 Weeks
| Period / Phase | Target Amount | Frequency | Notes & Calibration |
|---|---|---|---|
| Day 1Starting Baseline | 50 mcg | Pulse | Baseline Pulse: MC2R adrenal sensitivity test (2 units on U-100 syringe) |
| Days 2–7 | 125 mcg | Daily | Intermediate Challenge: Corticosterone release tracking (5 units on U-100 syringe) |
| Days 8–14 | 250 mcg | Daily | Full Challenge: Peak adrenocortical activation (10 units on U-100 syringe) |
4-phase stability timeline, RP-HPLC degradation benchmarks, and storage SOPs for ACTH 1-39
Operating Window: +2°C to +8°C (36°F to 46°F)
Active working solution dissolved in Bacteriostatic Water USP (0.9% Benzyl Alcohol).
| Storage Condition | Temperature Boundary | Physical Form | Valid Duration | Degradation Mechanism |
|---|---|---|---|---|
| ❄️Deep Freeze Cryo-Archive | -20°C | Lyophilized Solid | 24 to 36 Months | Negligible (<0.8%/yr) |
| 📦Ambient Courier Transit Window | +15°C | Lyophilized Solid | Up to 21–30 Days | Minimal without solvent (<0.5%) |
| 💧Reconstituted Refrigerated Storage (2°C–8°C) | +2°C | Reconstituted Solution | 28 to 35 Days | Gradual deamidation >28 days |
| 🚫Critical Degradation Thresholds | >37°C | Degradation Hazard | Immediate Degradation Hazard | Rapid peptide cleavage & aggregation |
Slow laminar stream against vial wall; avoid vigorous shaking.
ACTH 1-39 displays an estimated half-life of ~15 to 20 Minutes (Plasma half-life). Typical study protocols run for Acute to 4 Weeks followed by a washout period of 2 Weeks.
Standard Lyophilized Monograph
Full-Length 39-Amino-Acid Corticotropin Reference Standard. Formulated for in-vitro research and laboratory analytical validation.
Store desiccated at -20°C upon receipt. Reconstitute strictly in a certified laminar airflow hood utilizing sterile disposable instruments. Avoid direct exposure to UV or fluorescent radiation.
| Net Active Mass | Target Solvent | Diluent Volume | Resulting Concentration | Syringe Graduation Scale |
|---|---|---|---|---|
| 5 mg Lyophilized Cake | Bacteriostatic Water USP (0.9% Benzyl Alcohol) | 2.0 mL | 2.50 mg/mL | 1 Unit = 25.0 mcg (0.01 mL) |
Swab vial septum with sterile 70% IPA pad. Inspect cake for vacuum seal integrity.
Introduce 2.0 mL solvent slowly down inner glass wall. Never spray directly on cake.
Swirl gently in horizontal circles until fully dissolved. Never shake or invert aggressively.
Rest at +2°C to +8°C for 10 minutes until solution is crystal clear before drawing.
| Phase | Target Active Dose | U-100 Syringe Graduation | Cadence & Pharmacological Purpose |
|---|---|---|---|
| Days 1–7 (Priming) | 50 mcg | 2.0 Units (0.020 mL) | Initial receptor priming; evaluate baseline physiological tolerance. |
| Weeks 2–4 (Saturation) | 75 mcg | 3.0 Units (0.030 mL) | Target assay maintenance; peak neurotrophic / metabolic response. |
| Weeks 5–6 (Taper & Washout) | 50 mcg | 2.0 Units (0.020 mL) | Receptor consolidation prior to mandatory 4-week washout cycle. |
RP-HPLC / LC-MS In-Vitro Assay
Purity Spec: ≥ 98.0% Area
Research Use Only (RUO)
NOT EVALUATED OR APPROVED BY FDA