What is Vardenafil?
Vardenafil is a potent, selective PDE5 inhibitor with higher PDE5 affinity and greater selectivity over PDE6 than sildenafil, providing potentially fewer visual side effects. Studied for PDE5 pharmacology, erectile physiology, cGMP pathway research, and comparative PDE5 inhibitor pharmacology. Research use only.
Research Applications
PDE5 Inhibition Pharmacology
High-affinity PDE5 inhibition — IC50, selectivity profile, cGMP elevation
Comparative PDE5 Research
Vardenafil vs sildenafil vs tadalafil — selectivity, potency, PDE6 cross-reactivity
Erectile Physiology
Corpus cavernosum smooth muscle cGMP, NO pathway amplification
PDE6 Selectivity Research
Retinal PDE6 selectivity — visual side effect mechanism vs sildenafil comparison
Cardiovascular cGMP
Vascular smooth muscle relaxation, pulmonary hypertension, endothelial function
Quick Specs
| Form |
C₂₃H₃₂N₆O₄S, MW 488.6 |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
224785-90-4 |
| Molecular Weight |
MS molecular weight confirmed — every batch |
| Specification |
≥99% by HPLC — every batch |
| Shelf Life |
24 months (unopened) |
| Storage |
Room temperature sealed | cool, dry storage |
| Manufacture |
In-house synthesis — Qingdao, China |
| Brand |
China |
Frequently Asked Questions
How do I reconstitute this peptide?
QSC raw powder compounds are supplied as bulk crystalline or amorphous powder in a sealed, labelled container at the stated quantity. No reconstitution is required — the powder is ready for weighing and use in research applications.
How should this peptide be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct light. Keep in the original sealed container. Properly stored raw powder remains stable for 2–3 years.
What purity is this QSC compound and how is it verified?
All QSC raw powder compounds are tested to ≥99% purity by HPLC on every production batch, with MS-confirmed identity. COA is published on the product page and independently verifiable at verify.janoshik.com.
🧪 Peptide Research Tools: Use QSC's free
peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA 5–7 days
🌏 International shipping: 7–14 days
⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION
QSC products are strictly for in vitro and in vivo laboratory research.
Safety & Handling
🚫
Not for Human Use
These compounds are for research only.
🥽
PPE Required
Always use appropriate protective equipment.
❄️
Storage Compliance
Follow product-specific storage conditions.
Product-Specific Storage
Room temperature sealed | cool, dry storage
