5,6-DICHLORO-2,3-DICYANOPYRAZINE
- Product Name
- 5,6-DICHLORO-2,3-DICYANOPYRAZINE
- CAS No.
- 56413-95-7
- Chemical Name
- 5,6-DICHLORO-2,3-DICYANOPYRAZINE
- Synonyms
- 6-Dichloro-2;3-dicyanopyrazine;dichlorodicyanopyrazine;2,3-dichloro-5,6-dicyanopyrazine;5,6-DICHLORO-2,3-DICYANOPYRAZINE;5,6-Dichloro-2,3-dicyanopyrazine>dichloropyrazine-2,3-dicarbonitrile;5,6-DICHLORO-2,3-DICYANOPYRAZINE 98+%;5,6-DICHLORO-2,3-PYRAZINEDICARBONITRILE;2,3-Pyrazinedicarbonitrile, 5,6-dichloro-
- CBNumber
- CB2203391
- Molecular Formula
- C6Cl2N4
- Formula Weight
- 199
- MOL File
- 56413-95-7.mol
5,6-DICHLORO-2,3-DICYANOPYRAZINE Property
- Melting point:
- 183 °C
- Boiling point:
- 324.1±42.0 °C(Predicted)
- Density
- 1.68±0.1 g/cm3(Predicted)
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- solubility
- soluble in Methanol
- form
- powder to crystal
- pka
- -12.94±0.10(Predicted)
- color
- White to Light yellow to Light orange
- InChI
- InChI=1S/C6Cl2N4/c7-5-6(8)12-4(2-10)3(1-9)11-5
- InChIKey
- QUFXYBKGILUJHS-UHFFFAOYSA-N
- SMILES
- C1(C#N)=NC(Cl)=C(Cl)N=C1C#N
Safety
- RIDADR
- 2811
- HazardClass
- 6.1
- PackingGroup
- III
- HS Code
- 2933998090
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H301Toxic if swalloed
H315Causes skin irritation
H319Causes serious eye irritation
- Precautionary statements
-
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P270Do not eat, drink or smoke when using this product.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P405Store locked up.
P501Dispose of contents/container to..…
N-Bromosuccinimide Price
- Product number
- D2271
- Product name
- 5,6-Dichloro-2,3-dicyanopyrazine
- Purity
- >98.0%(GC)(N)
- Packaging
- 10g
- Price
- $301
- Updated
- 2025/07/31
- Product number
- D2271
- Product name
- 5,6-Dichloro-2,3-dicyanopyrazine
- Purity
- >98.0%(GC)(N)
- Packaging
- 25g
- Price
- $601
- Updated
- 2025/07/31
- Product number
- D434128
- Product name
- 5,6-Dichloro-2,3-dicyanopyrazine
- Packaging
- 100mg
- Price
- $45
- Updated
- 2021/12/16
- Product number
- D434128
- Product name
- 5,6-Dichloro-2,3-dicyanopyrazine
- Packaging
- 250mg
- Price
- $55
- Updated
- 2021/12/16
- Product number
- FD37396
- Product name
- 5,6-Dichloro-2,3-dicyanopyrazine
- Packaging
- 2g
- Price
- $75
- Updated
- 2021/12/16
5,6-DICHLORO-2,3-DICYANOPYRAZINE Chemical Properties,Usage,Production
Synthesis
36023-64-0
56413-95-7
The general procedure for the synthesis of 5,6-dichloropyrazine-2,3-dicarbonitrile from 5,6-dioxo-1,4,5,6-tetrahydropyrazine-2,3-dicarbonitrile is shown in Figure 13. The reaction should be carried out in a fume hood. A magnetically stirred slurry consisting of 8.10 g (0.050 mol) of 5,6-dioxo-1,4,5,6-tetrahydropyrazine-2,3-dicarbonitrile, 4.0 mL of dimethylformamide, and 160 mL of thionyl chloride is heated in a 500 mL round-bottomed flask equipped with 24/40 milled glass fittings under a high efficiency reflux condenser and nitrogen atmosphere. At the beginning of the reaction, the release of SO2 and HCl gas was observed at about 62°C. After about 3.5 h, the solid was completely dissolved and the temperature was raised to 70°C. Upon completion of the reaction, the reaction mixture was cooled to room temperature and subsequently placed in a dry ice/acetone bath to -65°C. The cooled slurry was rapidly filtered through a sintered-glass filter to collect the crystals formed under nitrogen protection. The solids were washed with two 50 mL portions of cold ether and air dried to give 7 g (70% yield) of 2,3-dichloro-5,6-dicyanopyrazine with a melting point of 180-182°C. If the product is darker, it can be carbonated and recrystallized by carbon treatment in 50 mL of chloroform to give 5.5 g of purified product.
References
[1] Journal of Heterocyclic Chemistry, 1986, vol. 23, p. 1419 - 1421
[2] Patent: US8742107, 2014, B1. Location in patent: Page/Page column 4; 5
[3] Acta Chemica Scandinavica, 1996, vol. 50, # 12, p. 1153 - 1156
[4] Tetrahedron Letters, 2012, vol. 53, # 25, p. 3126 - 3130
5,6-DICHLORO-2,3-DICYANOPYRAZINE Preparation Products And Raw materials
Raw materials
Preparation Products
5,6-DICHLORO-2,3-DICYANOPYRAZINE Suppliers
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- --
- Fax
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- contact@ambinter.com
- Country
- France
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View Lastest Price from 5,6-DICHLORO-2,3-DICYANOPYRAZINE manufacturers
- Product
- 5,6-DICHLORO-2,3-DICYANOPYRAZINE 56413-95-7
- Price
- US $10.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 10 mt
- Release date
- 2024-11-08
- Product
- 5,6-Dichloro-2,3-dicyanopyrazine 56413-95-7
- Price
- US $0.00-0.00/Kg
- Min. Order
- 1KG
- Purity
- 99.0%+
- Supply Ability
- 800 tons
- Release date
- 2020-04-29
- Product
- 5,6-DICHLORO-2,3-DICYANOPYRAZINE 56413-95-7
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- KG/T
- Release date
- 2019-12-20