Introduction

High-Purity AAS Raw Powder Factory Production And Transportation Process

Enhance Muscle Pump During Training

High-Purity Aas Raw Materials

Global Transportation

Factory Mass Production

Mechanism Of Action

Eu Region Express Transport

Products Description

## 1. Chemical Formula

C₂₂H₁₉N₃O₄

## 2. CAS Number

**171596-29-5**

## 3. Molecular Weight

**389.40 g/mol**

## 4. Appearance and Physical Properties

- Appearance: **White or off-white crystalline powder**

- Odor: Odorless, tasteless

- Melting Point: Approximately **298～302 ℃**

- Solubility: Almost **insoluble in water**; slightly soluble in methanol and ethanol; readily soluble in organic solvents such as dichloromethane and DMF

- Stability: **Chemically stable** under normal temperature, light-protected, sealed, and dry conditions

- Properties: Fine powder, high purity, no lumps; sensitive to humidity, requires moisture-proof and sealed storage

The core advantage of high-quality tadalafil raw materials lies in the strict process control and the pursuit of ultimate purity. Unlike ordinary raw materials that only meet the minimum standards of the pharmacopoeia, high-quality raw materials adopt advanced chiral synthesis and continuous flow reaction processes. Starting with tryptamine, a five-step precise reaction is used to construct the pyrazine-indole core ring system. Through asymmetric catalysis technology, the stereoselectivity of chiral intermediates is ensured to be ≥99.5%, and the final HPLC purity is ≥99.8%, with a single impurity ≤0.1% and the total impurities controlled below 0.5%, which is far superior to the national standard requirement of ≤2% total impurities.

This ultimate purity can not only maximize the efficacy, but also reduce the potential risks of allergies, liver and kidney burden caused by impurities, and provide a safety guarantee for long-term regular use. Long-term convenience and high compatibility are another major feature of high-quality tadalafil raw materials. Its unique molecular structure gives it a half-life of up to 36 hours. Compared with similar raw materials, there is no need to strictly control the time difference between medication and sexual activity, which greatly reduces the psychological burden on patients and realizes the flexible experience of "medication on demand". What's even more remarkable is that high-quality raw materials are unaffected by diet. Whether it's a high-fat diet or a small amount of alcohol, their absorption efficiency is not significantly affected. Furthermore, after crystal form optimization, the dissolution rate can reach 97% within 30 minutes, significantly improving bioavailability and adapting to the absorption needs of different body types

The dual breakthroughs in stability and safety make high-quality tadalafil raw materials stand out. High-quality raw materials are directionally prepared into type I superior pharmaceutical crystal forms through solvent gradient crystallization and temperature control, with crystal form purity ≥99%. Under normal storage conditions, they are not easily degraded, effectively extending the shelf life of the formulation . At the same time, impurity control strictly follows the ICH Q3C guidelines, and the content of residual solvents and heavy metals meets international standards. Compared with ordinary raw materials, this significantly reduces the incidence of adverse reactions such as headaches and myalgia. Even patients with underlying diseases such as hypertension and diabetes can use it safely under professional guidance .

Today, high-quality tadalafil raw materials are no longer simply "pharmaceutical ingredients," but have become a core competitive advantage for pharmaceutical companies in creating high-end products. It breaks the prejudice that "domestic raw materials = low quality". Some high-quality domestic raw materials have been upgraded through technology, and their purity and stability have approached or even reached the international advanced level. This provides solid support for the localization and standardization of andrology drugs. As the core raw material in the field of andrology treatment, high-quality tadalafil is based on process and purity. It redefines the medication experience with its excellent performance and brings safer, more convenient and more efficient treatment options to more patients.