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2-cyanopyrazine

2-Cyanopyrazine is a chemical compound with the molecular formula C₅H₃N₃ and CAS No. 19847-12-2. At room temperature, it appears as a pale yellow transparent liquid or crystalline solid with a characteristic odor. It has a melting point of 18–20°C and a boiling point of 84–87°C (at 18–20 mmHg), with a typical purity of ≥99.50%.Its molecular structure contains a pyrazine ring and a cyano group. This compound is mainly used in the synthesis of the anti-tuberculosis drug pyrazinamide and serves as an important intermediate in the fields of flavors, fragrances, and pharmaceuticals.
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Product Advantage

1.High Purity & Consistent Quality

Typically ≥99.5% purity, ensuring reliable performance and consistent results in downstream applications.

2.Highly Reactive & Versatile Intermediate

Featuring both a pyrazine ring and a cyano group, it offers excellent reactivity, making it ideal for a wide range of chemical transformations and synthesis processes.

3.Stable & Easy to Handle

Exhibits good chemical stability under normal storage conditions, allowing for safe transportation and long shelf life.

4.Wide Application Range

Suitable for pharmaceuticals, flavors & fragrances, and other fine chemical industries, providing flexibility for various formulations.

5.Process-Friendly Properties

Moderate boiling and melting points make it easy to control during synthesis, purification, and scale-up production.

Technical Parameters

CAS NO.

19847-12-2

Freezing point

18-20℃

Boiling point

84-87℃(18-20mmHg)

Specific weight

D2020=1.130-1.230

Refractive index

N2020=1.530-1.540

Water(%)

0.50%

Analytical purity(%)

99.50%(gas chromatography)

Product Uses

1.Synthesis of Anti-Tuberculosis Drugs

It serves as a key raw material for the synthesis of pyrazinamide, an important drug used in the treatment of tuberculosis.

2.Organic Synthesis

It is widely used as an intermediate in organic synthesis, participating in various reactions such as nucleophilic substitution and coupling reactions.

3.Flavors, Fragrances & Pharmaceuticals

It is extensively applied in the flavors, fragrance, and pharmaceutical industries as a valuable intermediate.

4.Surfactants, Coatings & Solvents

It can also be used in the preparation of surfactants, solvents, and coating materials.

FAQ

  • What functional groups are present in 2-cyanopyrazine and how do they influence its reactivity?

2-Cyanopyrazine contains a pyrazine ring and a cyano group (–CN). The electron-withdrawing nature of both structures increases its electrophilicity, making it highly reactive and suitable for various organic synthesis reactions such as nucleophilic substitution and coupling.

  • Why is 2-cyanopyrazine considered an important pharmaceutical intermediate?

It is a key starting material for the synthesis of pyrazinamide, an anti-tuberculosis drug. Its stable structure, high purity, and good reaction efficiency make it widely used in pharmaceutical manufacturing processes.

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