5-BROMO-PYRAZINE-2,3-DIAMINE

Product Name: 5-BROMO-PYRAZINE-2,3-DIAMINE
CAS No.: 89123-58-0
Chemical Name: 5-BROMO-PYRAZINE-2,3-DIAMINE
Synonyms: 2,3-Diamino-5-bromopyrazine;5-Bromo-2,3-pyrazinediamine;5-BROMO-2,3-DIAMINOPYRAZINE;5-BROMO-PYRAZINE-2,3-DIAMINE;2,3-Pyrazinediamine, 5-bromo-;Pyrazine, 2,3-diamino-5-bromo-;2,3-DIAMINO-5-BROMOPYRAZINE, 97%;5-BROMO-PYRAZINE-2,3-DIAMINE ISO 9001：2015 REACH
CBNumber: CB7438873
Molecular Formula: C4H5BrN4
Formula Weight: 189.01
MOL File: 89123-58-0.mol

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5-BROMO-PYRAZINE-2,3-DIAMINE Property

Melting point:: 212-216 °C (dec.)
Boiling point:: 357.1±37.0 °C(Predicted)
Density: 1.956±0.06 g/cm3(Predicted)
storage temp.: Keep in dark place,Sealed in dry,Room Temperature
form: solid
pka: 2.72±0.10(Predicted)
color: light brown

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Safety

Hazard Codes: Xn
Risk Statements: 22-36/37/38-43
Safety Statements: 26-36/37
WGK Germany: 3
HS Code: 2933998090

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 685763
Product name: 2,3-Diamino-5-bromopyrazine
Purity: 97%
Packaging: 250mg
Price: $101
Updated: 2023/06/20

TRC

Product number: D415070
Product name: 2,3-Diamino-5-bromopyrazine
Packaging: 250mg
Price: $55
Updated: 2021/12/16

TRC

Product number: D415070
Product name: 2,3-Diamino-5-bromopyrazine
Packaging: 1g
Price: $75
Updated: 2021/12/16

Matrix Scientific

Product number: 072225
Product name: 5-Bromo-2,3-diaminopyrazine
Purity: 95+%
Packaging: 10g
Price: $1000
Updated: 2021/12/16

SynQuest Laboratories

Product number: 3H30-9-V4
Product name: 5-Bromopyrazine-2,3-diamine
Packaging: 5G
Price: $495
Updated: 2021/12/16

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5-BROMO-PYRAZINE-2,3-DIAMINE Chemical Properties,Usage,Production

Uses

2,3-Diamino-5-bromopyrazine

Synthesis

24241-18-7

89123-58-0

The general procedure for the synthesis of 5-bromo-2,3-diaminopyrazine from 2-amino-3,5-dibromopyrazine was as follows: step 1: 2-amino-3,5-dibromopyrazine (3 g, 11.64 mmol) was suspended in a 25% aqueous ammonia solution (15 mL) in a sealed tube and the reaction was heated for 16 h at 110 °C. The reaction process was monitored by thin layer chromatography (TLC). Upon completion of the reaction, the reaction mixture was partitioned between ethyl acetate and water (3 x 50 mL). The organic phases were combined, washed with saturated brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography with 15% ethyl acetate-hexane mixed solvent as eluent to afford 5-bromo-2,3-diaminopyrazine as a yellow solid (2.1 g, 93% yield). Mass spectrum (electrospray ionization) m/z: 189 ([M+H]+).

References

[1] Patent: US2011/59118, 2011, A1. Location in patent: Page/Page column 81-82
[2] Bioorganic and Medicinal Chemistry, 1999, vol. 7, # 6, p. 1059 - 1065
[3] Patent: WO2017/64068, 2017, A1. Location in patent: Page/Page column 59; 60
[4] Patent: TWI523856, 2016, B. Location in patent: Paragraph 0078
[5] Patent: CN108395436, 2018, A. Location in patent: Paragraph 0010

5-BROMO-PYRAZINE-2,3-DIAMINE Preparation Products And Raw materials

Raw materials

Preparation Products

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5-BROMO-PYRAZINE-2,3-DIAMINE Suppliers

China 99 Czech Republic 1 Germany 2 Hungary 1 India 2 Switzerland 1 United Kingdom 3 United States 14 Global 123

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View Lastest Price from 5-BROMO-PYRAZINE-2,3-DIAMINE manufacturers

Zhuozhou Wenxi import and Export Co., Ltd

Product: 5-BROMO-PYRAZINE-2,3-DIAMINE 89123-58-0
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-10

Zhuozhou Wenxi import and Export Co., Ltd

Product: 5-BROMO-PYRAZINE-2,3-DIAMINE 89123-58-0
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-09

Career Henan Chemical Co

Product: 5-BROMO-PYRAZINE-2,3-DIAMINE 89123-58-0
Price: US $1.00/KG
Min. Order: 1KG
Purity: 95%
Supply Ability: 500kg
Release date: 2018-08-19

89123-58-0, 5-BROMO-PYRAZINE-2,3-DIAMINERelated Search:

2-AMINO-5-BROMO-3-PIPERIDIN-1-YLPYRAZINE 5-BROMO-N3-METHYL-PYRAZINE-2,3-DIAMINE 2-AMINO-5-BROMO-3-(DIMETHYLAMINO)PYRAZINE 2-AMINO-5-BROMO-3-HYDRAZINOPYRAZINE 2-AMINO-5-BROMO-3-(ETHYLAMINO)PYRAZINE 5-BROMO-PYRAZINE-2,3-DIAMINE 2-AMINO-5-BROMO-3-MORPHOLIN-4-YLPYRAZINE 2-AMINO-5-BROMO-3-PYRROLIDIN-1-YLPYRAZINE 2-AMINO-5-BROMO-3-PIPERAZIN-1-YLPYRAZINE 2-AMINO-5-BROMO-3-(DIETHYLAMINO)PYRAZINE Aminopyrazine 6'-BROMO-3-PHENYL-3,4,5,6-TETRAHYDRO-2H-[1,2']BIPYRAZINYL-3'-YLAMINE 5-BROMO-3-[1,4]DIAZEPAN-1-YL-PYRAZIN-2-YLAMINE 5-BROMO-3-(2-PYRIDIN-3-YL-PYRROLIDIN-1-YL)-PYRAZIN-2-YLAMINE 6'-BROMO-3-METHYL-3,4,5,6-TETRAHYDRO-2H-[1,2']BIPYRAZINYL-3'-YLAMINE 5-BROMO-3-(2-PYRIDIN-2-YL-PYRROLIDIN-1-YL)-PYRAZIN-2-YLAMINE 5-BROMO-3-(2-PHENYL-PYRROLIDIN-1-YL)-PYRAZIN-2-YLAMINE 5-BROMO-3-[(4-METHOXYBENZYL)AMINO]PYRAZIN-2-AMINE

5-BROMO-2,3-DIAMINOPYRAZINE

5-BROMO-PYRAZINE-2,3-DIAMINE

2,3-DIAMINO-5-BROMOPYRAZINE, 97%

Pyrazine, 2,3-diamino-5-bromo-

2,3-Pyrazinediamine, 5-bromo-

5-BROMO-PYRAZINE-2,3-DIAMINE ISO 9001：2015 REACH

5-Bromo-2,3-pyrazinediamine

2,3-Diamino-5-bromopyrazine

89123-58-0

New Products for Chemical Synthesis May/June 2007