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High Quality USP/EP/BP GMP DMF FDA Azapropazone Tablets CAS NO 13539-59-8 Producer

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Price: $ 0.08 / Tablet
min order: 1 Tablet
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  • Quantity Price
  • 1 $0.5
  • 10000 $0.2
  • 100000 $0.1
  • 300000 $0.08
  • AZ021
  • Dideu
  • 13539-59-8
  • C16H20N4O2
  • 236-913-8
  • China
  • Azapropazone Tablets
  • High quality
  • 99.0% Min
  • 99%-101%
  • Tablet
  • Solubility in water
  • 1.0% max
  • 0.5% Max
  • 10 ppm Max
  • H-NMR
  • 0.5% Max
  • Medicine

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Azapropazone Tablets

Action and use

Cyclo-oxygenase inhibitor; analgesic; anti-inflammatory.


Azapropazone Tablets contain Azapropazone.

The tablets comply with the requirements stated under Tablets and with the following requirements.

Content of azapropazone, C16H20N4O2,2H2O95.0  to 105.0% of the stated content.


A.  Shake a quantity of the powdered tablets containing 0.1  g of Azapropazone with 10  ml of methanol, filter (Whatman GF/C paper is suitable), evaporate the filtrate and dry the residue at 60° for 1  hour. The infrared absorption spectrum of the residue, Appendix II A, is concordant with the reference spectrum of anhydrous azapropazone (RS 017).

B.  The light absorption, Appendix II B, in the range 210  to 350  nm of solution (1) obtained in the Assay is concordant with that of solution (2).


Related substances

Carry out the following operations in subdued light using low-actinic glassware without delay. Carry out the method for liquid chromatography, Appendix III D, using the following solutions in a mixture of 1  volume of phosphate buffer pH 4.0 and 3  volumes of methanol (solvent A). For solution (1) shake a quantity of the powdered tablets containing 0.1  g of Azapropazone with 70  ml of solvent A, dilute to 100  ml and filter. Solution (2) contains 0.00025% w/v of azapropazone impurity A BPCRS. Solution (3) contains 0.00075% w/v of azapropazone impurity C BPCRS. For solution (4) dilute 10  ml of solution (1) to 100  ml and dilute 1  ml of the resulting solution to 100  ml. Solution (5) contains 0.1% w/v of azapropazone impurity standard BPCRS. For solution (6) dilute 1  volume of solution (4) to 2  volumes.

The chromatographic procedure may be carried out using (a) a stainless steel column (30  cm × 3.9  mm) packed with end-capped octadecylsilyl silica gel for chromatography (10 µm) (µBondapak C18 is suitable), (b) a mixture of 1  volume of glacial acetic acid, 36  volumes of methanol and 63  volumes of a 0.068% w/v solution of sodium butanesulphonate in water as the mobile phase with a flow rate of 2.5  ml per minute and (c) a detection wavelength of 254  nm.

Inject solution (5) and continue the chromatography for 5  times the retention time of the principal peak. The test is not valid unless the chromatogram obtained with solution (5) closely resembles the reference chromatogram. If necessary adjust the proportion of methanol in the mobile phase to give the required retention times.

In the chromatogram obtained with solution (1) the area of any peaks corresponding to azapropazone impurities A and C are not greater than the areas of the corresponding peaks in the chromatograms obtained with solutions (2) and (3) (0.25% and 0.75% respectively). The area of any other secondary peak other than any peak corresponding to azapropazone impurity B is not greater than the area of the peak in the chromatogram obtained with solution (4) (0.1%). Calculate the content of impurities A and C using the respective reference solutions and the content of any unnamed impurities using solution (4). The total content of impurities is not greater than 1%. Disregard any peak with an area less than the area of the peak in the chromatogram obtained with solution (6) (0.05%).

AssayCarry out the following operations in subdued light using low-actinic glassware without delay. Weigh and powder 20  tablets. To a quantity of the powdered tablets containing 0.6  g of Azapropazone add 20  ml of water, shake for 30  minutes, add 60  ml of methanol, shake for 10  minutes and dilute to 100  ml with water. Centrifuge a portion of the solution at 3000 revolutions per minute for 10  minutes and filter the supernatant liquid through a 0.45-µm membrane filter. Dilute 5  ml of the filtrate to 500  ml with water and further dilute 15  ml of the resulting solution to 200  ml with water. Measure the absorbance of the resulting solution at the maximum at 253  nm, Appendix II B. Calculate the content of C16H20N4O2,2H2O, taking 1033 as the value of A(1%, 1  cm) at the maximum at 253  nm.


Azapropazone Tablets should be protected from light.

The packaging can be customized. the shipping term can be by sea, by air, and sample or small quantity can be shipped by DHL, FEDEX, EMS and TNT.


a) Free sample can be supplied.

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Why do you choose Dideu Industries as your partner?

A) High quality can be guaranteed. Dideu Industries since 1975 are reputed chemical manufacturer and are Certified by ISO 9001;2015 and have GMP certification.Free sample can be arranged before shipment and SGS,BV and other third party inspection company are accepted before loading.For regular customers, we accept L/C 180 Days, D/P,D/A payment term. If there is any quality problem after goods arrive. Dideu Industries will do fully payment refund.

B) Best price can be guaranteed. As Dideu Industries are integrated pharmaceuticals and chemicals producer, the production cost can be controlled and price will be definitely more competitive than China trading companies.

C) Professional enginners from Dideu Industries will give professional usage guide and services after sales.

D)Dideu Industries work 7×24 hours and your request will be processed by our professional staff in different shift period.

Dideu Industries is one of the largest producer for general chemical, pharmaceutical, nutrition additive, natural extracts, agrochemical and Daily-Use Chemical in China and is headquartered in Shaanxi, China. The Dideu Group comprises subsidiaries and joint ventures in more than 10 countries and operates six integrated production sites and 21 other production sites in Europe, Asia, Australia, Americas and Africa.Its headquarters is located in Xi’An,China. Dideu has customers in over 200 countries and supplies products to a wide variety of industries.

At the end of 2014, the company employed more than 13000 people. In 2014, Group Dideu posted sales of 30 billion and income from operations before special items of about 7.5 billion. The company is currently expanding its international activities with a particular focus on Asia countries. Between 1990 and 2005, the company invested 5.2 billion in Asia, for example in sites near Guangxi,Yunnan, Sichuan, Shaanxi China,Mangalore in India,Bangkok, Thailand,Hanoi, Vietnam etc.

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At Dideu, we redefine chemistry to make the world better - and have been doing so for 75 years. As one of the world's leading chemical company, we combine economic success with environmental protection and social responsibility.Through science and innovation we enable our customers in nearly every industry to meet the current and future needs of society.

At Dideu, we create chemistry for a sustainable future with science for a better life.Dideu is a Life Science company with a long and glorious history and core competencies in the areas of health care and agriculture. With our innovative products, we are contributing to finding solutions to some of the major challenges of our time. The growing and increasingly aging world population requires improved medical care and an adequate supply of food. Dideu is improving people's quality of life by preventing, alleviating and treating diseases. And we are helping to provide a reliable supply of high quality food, feed and plant based raw materials.We develop new molecules for use in innovative products and solutions to improve health. Our research and development activities are based on a profound understanding of the biochemical processes in living organisms.Our goal is to achieve and sustain leadership positions in our markets, thus creating value for our customers, stockholders and employees. To this end, our strategy is designed to help solve some of the most pressing challenges facing humankind, and by doing this exceptionally well we aim to strengthen the company's earning power. 

We are committed to operating sustainably and addressing our social and ethical responsibilities as a corporate citizen, while at the same time respecting the interests of all our stakeholders. Employees with a passion for innovation enjoy excellent development opportunities at Dideu.Exclusive Focus on the Life Science BusinessesFollowing the economic and legal independence of our former Material Science subgroup.Dideu has charted the course for its successful development as a Life Science company. Our Life Science businesses hold leading positions in innovation driven growth markets. Together they make up a strong, attractive and balanced portfolio that is resistant to fluctuations in demand and to potential risks.The previous structure comprising a strategic management holding company and operational subgroups has thus been replaced by an integrated organization under the umbrella of the strong Dideu brand. The company's operations are managed in three divisions Pharmaceuticals, Consumer Health and Crop Science and the Animal Health business unit.The business continues to be supported by the corporate functions, Dideu Business Services and the service company Currenta, while Technology Services is being integrated into Dideu Group, forming the Engineering and Technology function.

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