QSC RESEARCH GRADE
≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPS1-Region Domestic Shipping
What is Vardenafil?
Vardenafil (Levitra — high-selectivity PDE5 inhibitor) is a Small molecule C₂₃H₃₂N₆O₄S·HCl, MW 579.1. Potent PDE5 inhibitor with higher selectivity for PDE5 over PDE6 (colour vision interference) compared to sildenafil. Prevents cGMP degradation in vascular smooth muscle via NO pathway. Short half-life (~4–5hr). Hepatically metabolised (CYP3A4 — relevant for drug interaction research).
Research Applications
High PDE5/PDE6 Selectivity
Lower visual side effects vs sildenafil — selectivity research
cGMP/NO Pathway
Smooth muscle vasodilation, blood flow, endothelial interaction
Short-Acting PK
4–5hr half-life — rapid onset and clearance pharmacokinetics
CYP3A4 Interaction
Drug-drug interaction research at CYP3A4 metabolic site
vs Tadalafil
Short-acting (vardenafil) vs long-acting (tadalafil) PDE5 comparison
Quick Specs
| Form | Lyophilized powder |
| Purity | ≥99% by HPLC — every batch |
| CAS Number | 224785-91-5 |
| Identity | MS molecular weight confirmed — every batch |
| Peptide Type | Phosphodiesterase Type 5 (PDE5) Inhibitor |
| COA | Janoshik-independent, publicly verifiable |
| Manufacture | In-house Fmoc SPPS — Qingdao, China |
| Storage | -20°C sealed | 2–8°C reconstituted (2–4 weeks) |
| Shelf Life | As indicated by manufacturer |
