Product Category: Research-Grade Vitamin Supplement/Reagent Active Ingredient: Cholecalciferol (Vitamin D3) Strength: 0.5 mg per vial (500 μg/vial) Physical Form: White crystalline powder; odorless and tasteless Molecular Formula: C₂₇H₄₄O Molecular Weight: 384.64 g/mol CAS Number: 67-97-0 Storage Conditions: Store at -20°C to -80°C under inert atmosphere (nitrogen or argon); protect from light and moisture Shelf Life: 24 months when stored as recommended
🔍 Key Properties & Stability
Solubility: Practically insoluble in water; soluble in ethanol, chloroform, and vegetable oils
Stability: Heat-stable but sensitive to UV light and oxidation; undergoes photodegradation when exposed to sunlight
Purity: ≥99% (HPLC); endotoxin level <0.1 EU/mg
🧠 Biological Functions
Vitamin D3 is a fat-soluble prohormone with critical roles in:
Calcium Homeostasis: Enhances intestinal absorption of calcium and phosphorus via vitamin D receptor (VDR) activation
Bone Health: Regulates osteoblast and osteoclast activity, maintaining bone mineral density
Immune Modulation: Modulates innate and adaptive immune responses through VDR-expressing immune cells
Gene Regulation: Acts as a nuclear receptor ligand, influencing transcription of over 200 genes
💊 Research Applications
This formulation is primarily used in:
Biochemical Research: Standard for vitamin D3 quantification assays (e.g., HPLC, LC-MS/MS)
Cell Culture Studies: Investigation of VDR signaling pathways in cancer, autoimmune, and metabolic disease models
Animal Studies: Induction or prevention of vitamin D deficiency in rodent models
Diagnostic Controls: Calibration of clinical vitamin D test kits
⚙️ Handling & Reconstitution
Reconstitution: Dissolve in ethanol or DMSO (recommended concentration: 1-10 mg/mL)
Dilution: Further dilute in cell culture medium or biological buffer to working concentrations
Precautions: Use gloves and protective eyewear; handle under fume hood when working with concentrated solutions
🌡️ Dosage Considerations (Research Use)
In Vitro: Typically 10-100 nM for cell culture studies
In Vivo: 0.1-1 μg/g body weight for rodent models (adjust based on study design)
None of our HGH lines are inherently better than the other. Each batch comes with a corresponding test report. Purity and dimer can be a decent proxy for “quality”, you want purity as high as possible and dimer as low as possible. The main factor to consider in our opinion, is the price per IU. Supreme is usually the best bang for buck option. Historically, Supreme & Deluxe have shown lower dimer content, although this may not always be the case, so of course reference the corresponding test reports.
For HGH, we typically recommend 1ml for every ~10 IU in the vial. If a batch tests at an average of 290 IU per kit, that is an average of 29 IU per vial, and we’d recommend 2.9ml of bacteriostatic water. This will make the syringe math similar to a traditional 100 iu kit with 1ml of solution For peptide reconstituion, you can use our amazing Dosage Calculator.
Not necessarily. If you look through all our lab reports, particularly the ones with multiple test reports in a single batch, you will see that the intra-batch variance can actually be quite high. When you purchase a batch, you can expect some of the vials in your kit to be as much as 5-15% +/- whatever the corresponding lab test reflects. This is simply the reality of product that is not made to the same standards as pharmaceutical grade growth hormone. To state otherwise would be disingenous. There can also be a high variance in the dimer content intra-batch. (For Example: Economy B, Deluxe A, etc) Over time, we’ve increased the volume of samples analyzed for each batch, to provide more transparancy regarding the potential for intra-batch variance. If you use the average IU figure provided on each product, your dosage should average out over time, so don’t overthink your administration protocol too much. We know it can be a bit overwhelming with all the different numbers provided. That said, don’t hesitate to reach out if you need specific guidance on dosage or reconstitution.
Yes! We offer store credit for quantitative testing of total IU/Purity (ie Janoshik testing), and for personal IGF-1 test results. Please email for more information. *TERMS APPLY*
Depending on your location, most customers receive their order in 2-10 business days. We ship with USPS Ground Shipping, from the United States only. 99% of orders ship within 24 hours (excluding weekends & holidays)
We are no longer providing tracking. If your order is over 10 business days old and hasn’t arrived, our customer service team can check your tracking information to see the status of your package
If your order was marked as “completed”, typically this means a label has been generated and your order is scheduled to go out that day or the next. “Processing” status orders have not been shipped, processing means payment has been confirmed successfully. Don’t hesitate to reach out regarding the status of your order.
Unfortunately we do not provide reships for incorrect addresses. In the VERY rare instance that a package is lost in transit, we will reship your order free of charge.
Retatrutide is a next-generation triple incretin agonist, targeting GLP-1 (glucagon-like peptide-1), GIP (glucose-dependent insulinotropic polypeptide), and Glucagon receptors simultaneously. This unique triple-action mechanism offers a powerful blend of appetite suppression, fat oxidation, and energy regulation, positioning Retatrutide at the forefront of advanced weight management and metabolic enhancement therapies.
This product is supplied as a lyophilized powder and requires reconstitution before use.
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This product has multiple variants. The options may be chosen on the product page
Semaglutide is a GLP-1 receptor agonist originally developed for type 2 diabetes and now widely used in medically guided weight loss and metabolic optimization protocols. By mimicking the natural hormone GLP-1, it helps regulate blood sugar, reduce appetite, and delay gastric emptying — resulting in sustained fat loss, improved insulin sensitivity, and enhanced satiety.
This product contains Semaglutide in lyophilized (freeze-dried) powder form, requiring reconstitution before use.
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This product has multiple variants. The options may be chosen on the product page
MOTS-c is a naturally occurring mitochondrial-derived peptide that plays a key role in cellular energy regulation, fat metabolism, and glucose control. Often referred to as a “metabolic mini-hormone,” MOTS-c enhances the body’s ability to burn fat, improve insulin sensitivity, and adapt to metabolic stress — making it an ideal peptide for those seeking fat loss, improved endurance, and anti-aging support.
This product is supplied as a lyophilized powder and requires reconstitution prior to subcutaneous injection.
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This product has multiple variants. The options may be chosen on the product page
