Good Quality Cyanide Treatment In Wastewater - 3-Amino-4-pyrazole carbosamide hemisulfate – JIN DUN

Short Description:

Product Detail

Product Tags

Feedback (2)

We have now our possess revenue group, design staff, technical crew, QC team and package group. We now have strict excellent regulate procedures for each process. Also, all of our workers are experienced in printing subject for Gma Chloridion, Ozonation Disinfection, Edr Water Treatment, We will make greater efforts to help domestic and international buyers, and create the mutual benefit and win-win partnership between us. we are eagerly waiting for your sincerely cooperation.

Good Quality Cyanide Treatment In Wastewater - 3-Amino-4-pyrazole carbosamide hemisulfate – JIN DUN Detail:

Intermediate for the synthesis of allopurinol.

It is one of the 3-amino-4-substituted pyrazole series. It can be used as an intermediate to synthesize many pharmacologically effective organic compounds, such as allopurinol, one of the pyrazolopyrimidine derivatives series, the latter since 1963 Since its clinical use, it has been the main drug for the treatment of gout. At present, there are few known methods for synthesizing

3-aminopyrazole-4-carboxamide hemisulfate in China, mainly by reacting malononitrile and triethyl orthoformate to prepare ethoxymethylene malononitrile, and then with The reaction of hydrazine hydrate yields 3-amino-4-cyanopyrazole, which is finally reacted with concentrated sulfuric acid to produce

3-aminopyrazole-4-carboxamide hemisulfate (Chen Huiru, Xiao Guomin et al. 3-aminopyrazole- Synthesis of 4-formamide hemisulfate [J]. Chemical Industry Times, 2008, 6 (22): 39 40), the total yield of synthesis by this method is about 60% (calculated as malononitrile), this method It involves a three-step reaction, the steps are longer, and the reagents used, such as malononitrile and ethoxymethylene malononitrile, are more toxic and expensive. In addition, the 3-aminopyrazole-4 prepared by this method -Formamide hemisulfate has a color that is difficult to remove and requires additional processing, which is more complicated.

There are reports in foreign literature using pyridylamide hydrazone and ethoxymethylene malononitrile as raw materials to obtain 3-amino-4-cyanopyrazole by addition and cyclization, and then react with concentrated sulfuric acid to obtain the target compound (Reuken G Jones. Reactions of orthoesters with activemethylene compounds[J]. J Am Chem Soc. 1952,74(5) :4889 4891). The main raw materials used in this method are expensive, the reaction yield is not high, and the profit of industrial production is low. It must be difficult.

Executive standard: Enterprise Standard
Exterior: Off-white or yellow powder

Package: 25kg/drum
assay（HPLC）content Greater than or equal to 98.0%
purity（HPLC）content Greater than or equal to 99.5%

Product detail pictures:

Related Product Guide:

With reliable good quality system, great standing and perfect consumer support, the series of products and solutions produced by our organization are exported to quite a few countries and regions for Good Quality Cyanide Treatment In Wastewater - 3-Amino-4-pyrazole carbosamide hemisulfate – JIN DUN , The product will supply to all over the world, such as: Kyrgyzstan, Accra, Miami, With the effort to keep pace with world's trend, we'll always endeavor to meet customers' demands. If you want develop any other new items, we can customize them to suit your needs. If you feel interest in any of our products and solutions or want develop new merchandise, you should feel free to contact us. We are looking forward to forming successful business relationship with customers all over the world.

Abilify Aripiprazole