Product Overview
- Product Name: Tadalafil
- CAS Number: 171596-29-5
- Molecular Formula: C₂₂H₁₉N₃O₄
- Molecular Weight: 389.40
- Appearance: White crystalline powder
- Melting Point: 298–300 °C
What is Tadalafil?
Tadalafil (CAS 171596-29-5) is a phosphodiesterase-5 (PDE5) inhibitor classified as a pharmaceutical active pharmaceutical ingredient (API). It is a core API used by qualified pharmaceutical companies for the research, development, and lawful manufacturing of finished dosage forms, and it serves as a key raw material in the global generic drug supply chain.

Why choose Highassay?
- Highassay supplies pharmaceutical-grade, high-purity Tadalafil API, providing a complete COA and MSDS with every batch to save you time on quality audits and boost procurement and production efficiency.
- We offer customization services for particle size and purity to meet the specific R&D requirements of your formulations.
- We support small-batch trial orders starting at just 1 kg—helping to lower the cost of trial-and-error in your R&D—with rapid shipping within 3–7 days.
- Our product is 100% patent-compliant; the patent for this core compound has expired, ensuring your product is free from infringement concerns.
Buy Tadalafil API,choose Highassay——Your Trusted Partner.
MSDS of Tadalafil
Specification of Tadalafil
- Specification of Tadalafil
| Item | Specification |
| Identification | Conforms to standard |
| Assay (on dried basis) | ≥99.0% |
| Appearance | White to off-white crystalline powder |
| Loss on Drying | ≤0.5% |
| Residue on Ignition | ≤0.1% |
| Heavy Metals | ≤20 ppm |
| Lead (Pb) | ≤10 ppm |
| Arsenic (As) | ≤2 ppm |
| Cadmium (Cd) | ≤2 ppm |
| Mercury (Hg) | ≤0.5 ppm |
| Related Substances | Total impurities ≤1.0%;Largest single impurity ≤0.5% |
| Particle Size (optional) | D50: 20–60 μm, customizable |
| pH Value (1% aqueous dispersion) | 3.0–6.0 |
No. The core compound patent of Tadalafil has expired in major global markets. Our product is fully compliant for legal production and sales.
We provide small-sized trial samples in brown vials. Contact us for sample policy and shipping details.
We provide COA, MSDS and support customs clearance for global shipment.
Regular orders ship within 3–7 working days after payment confirmation.
Packaging & Shipping
- Packaging: 1kg/foil bag; 5kg/10kg/25kg fiber drum; custom packaging is also available.
- Minimum Order Quantity (MOQ): 1kg
- Documentation: COA and MSDS provided with shipment.
- Storage: Store in a sealed container in a cool, dry, and dark place.
- Shelf Life: 2 years when properly stored.
- Sample Requests: We offer small-quantity trial orders packaged in amber glass vials; please contact customer service for details.
Compliance Notice: Our Tadalafil API is intended solely for use as a pharmaceutical raw material; its use in food, dietary supplements, or as an illegal additive is strictly prohibited.





