Tadanafil Cialis tadalafil CAS 171596-29-5 CAS NO.171596-29-5

Tadalafil (Tadalafil, Tadalafil) has a molecular formula of C22H19N3O4 and a molecular weight of 389.4. It has been widely used in the treatment of male erectile dysfunction since 2003, with the trade name Cialis (Cialis). In 2008, Eli Lilly and Company of the United States sold the commercial development rights of this product for the treatment of PAH to United Therapeutics. In June 2009, the FDA approved tadalafil in the United States for the treatment of patients with pulmonary arterial hypertension (PAH) under the trade name Adcirca. Tadalafil came out in 2003 as a drug for the treatment of ED. It takes effect 30 minutes after administration, but its best effect is 2h after the onset of action, and the effect can last for 36h, and its effect is not affected by food. The dose of tadalafil is 10 or 20 mg, the recommended initial dose is 10 mg, and the dose is adjusted according to the patient's response and adverse reactions. Pre-market studies have shown that after oral administration of 10 or 20 mg of tadalafil for 12 weeks, the effective rates are 67% and 81%, respectively. Many studies have shown that tadalafil has better efficacy in the treatment of ED.

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English name: Tadalafil
CAS number: 171596-29-5
Molecular formula: C22H19N3O4
Molecular weight: 389.4
EINECS Number: 687-782-2
Melting point: 298-300°C
Specific rotation: D20+71.0°
Boiling point: 679.1±55.0°C (Predicted)
Density: 1.51±0.1g/cm3(Predicted)
Storage conditions: Sealedindry, 2-8°C
Solubility DMSO:soluble20mg/mL,clekar
Form: powder
Acidity coefficient: (pKa) 16.68±0.40 (Predicted)
Color: white to beige

Wuhan Kanal Technology Co., Ltd. founded in 2010,it is a large manufacturer of fine Pharmaceutical& Chemical & Cosmetic materials that integrates R&D, production and sales together.  Our Kanal company is established under the support of the Wuhan city government, so Kanal has large advantages in enterprise credit, finance security, product quality control, and cargo export.Kanal locates in the national new materials industry park of Wuhan city and is awarded the title of high-tech corporation.

Wuhan Kanal has its own R&D and development laboratory. We Kanal set up a R&D team with rich experience and strong technical strength, most of the practitioners have more than ten years' experience and technology in organic synthesis development. It owns almost 15 acre and more than 280 workers.

An ISO 9001 & GMP qualified company, we are mainly specialized in producing high quality but low price Pharmaceutical intermediates, APIs and other fine chemicals & cosmetics products which related to human and animals medicines as well as additives in gas &oil field, almost half of the goods are for exporting. What's more, we provide the OEM (customize) manufactures, if you can't find materials from the world, then tell us, we will research and produce in our high-tech equipmented laboratory. We are dedicated to satisfying our customers with our products and services.


1. We has 11 years' exporting experience in active pharmaceutical ingredient products.
Our professional and thoughtful after-sales service eliminates your worries.

2.We can provide you with ten thousands of products of different levels.

3. We offer convenient one-station purchasing service.

(1)Any inquiries will be replied within 12 hours.
(2)Dedication to quality, supply & service.
(3)Strictly on selecting raw materials.
(4)Reasonable & competitive price, fast lead time.

Our company is based on the optical valley biological city,making full use of the park policy advantages, focusing on the research and development of biological medicine.

The pharmaceutical intermediates are mainly applied to anti-cancer, anti-depression, cardiovascular, diabetes and other new medicine. The chemical intermediates mainly refer to heterocyclics and OLED intermediates.Our factory produce new fine chemical materials which are mainly used in water treatment, bactericidal and anti-corrosion, dyes, electronic materials and other industry fields.
Wuhan Kanal has export & import license, and hazard chemical sales license. The products are exported to America, Brazil, South Korea, Japan, Taiwan, Malaysia, Thailand, Indonesia, Europe union and other countries or regions. 
Under rich experiences and excellent international reputation, the company becomes a quite influential enterprise in China's API field. Wuhan Kanal sincerely look forward to establishing long good cooperation with our customers from all over the world.