ChemicalBook > CAS DataBase List > 5,6-DICHLORO-2,3-DICYANOPYRAZINE

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
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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
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Safety

RIDADR 
2811
HazardClass 
6.1
PackingGroup 
III
HS Code 
2933998090
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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..…

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N-Bromosuccinimide Price

TCI Chemical
Product number
D2271
Product name
5,6-Dichloro-2,3-dicyanopyrazine
Purity
>98.0%(GC)(N)
Packaging
10g
Price
$301
Updated
2025/07/31
TCI Chemical
Product number
D2271
Product name
5,6-Dichloro-2,3-dicyanopyrazine
Purity
>98.0%(GC)(N)
Packaging
25g
Price
$601
Updated
2025/07/31
TRC
Product number
D434128
Product name
5,6-Dichloro-2,3-dicyanopyrazine
Packaging
100mg
Price
$45
Updated
2021/12/16
TRC
Product number
D434128
Product name
5,6-Dichloro-2,3-dicyanopyrazine
Packaging
250mg
Price
$55
Updated
2021/12/16
Biosynth Carbosynth
Product number
FD37396
Product name
5,6-Dichloro-2,3-dicyanopyrazine
Packaging
2g
Price
$75
Updated
2021/12/16
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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

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5,6-DICHLORO-2,3-DICYANOPYRAZINE Suppliers

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View Lastest Price from 5,6-DICHLORO-2,3-DICYANOPYRAZINE manufacturers

Hebei Chuanghai Biotechnology Co., Ltd
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
Shaanxi Dideu Medichem Co. Ltd
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
Career Henan Chemical Co
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

56413-95-7, 5,6-DICHLORO-2,3-DICYANOPYRAZINERelated Search:

Propargyl bromide Dichloroethyne N-PHENYL-1-NAPHTHYLAMINE HYDROBROMIDE diiodoacetylene acetylene bromide penicillinase fluoroethyne 5,6-DICHLORO-2,3-DICYANOPYRAZINE 2-CHLORO-5-METHYLPYRAZINE 2,3-DICYANOPYRAZINE 6-chloropyrazine-2-carbonitrile 2-CHLORO-5-CYANOPYRAZINE 2,3-Dichloropyrazine Pyrazine Pyrazinecarbonitrile 2-Chloro-6-methylpyrazine 2-CYANO-3-METHYLPYRAZINE 5-Chloro-2,3-pyrazinedicarbonitrile

  • 5,6-DICHLORO-2,3-DICYANOPYRAZINE
  • 5,6-DICHLORO-2,3-PYRAZINEDICARBONITRILE
  • dichlorodicyanopyrazine
  • 5,6-DICHLORO-2,3-DICYANOPYRAZINE 98+%
  • dichloropyrazine-2,3-dicarbonitrile
  • 2,3-dichloro-5,6-dicyanopyrazine
  • 3-dicyanopyrazine
  • 6-Dichloro-2
  • 5,6-Dichloro-2,3-dicyanopyrazine&gt
  • 2,3-Pyrazinedicarbonitrile, 5,6-dichloro-
  • 5,6-DICHLORO-2,3-DICYANOPYRAZINE ISO 9001：2015 REACH
  • 56413-95-7
  • C6Cl2N4
  • Pyrazines
  • Dicyanopyrazines, etc. (Building Blocks for Phthalonitriles & Naphthalonitriles)
  • Chloropyrazines, etc.
  • Phthalonitriles & Naphthalonitriles
  • Chloropyrazines, etc.
  • Dicyanopyrazines, etc. (Building Blocks for Phthalonitriles & Naphthalonitriles)
  • Functional Materials
  • Phthalonitriles & Naphthalonitriles
  • Pyrazines