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2-Bromopyrazine

2-Bromopyrazine structure

CAS No.: 56423-63-3

Chemical Name:: 2-Bromopyrazine

Synonyms: Bromopyrazine;2-BROMOPYRAZINE;Pyrazine, 2-bromo-;2-Bromopyrazine >2-Bromo-1,4-diazine;2-BROMOPYRAZINE, 95+%;Pyrazine, bromo- (9CI);2-Bromopyrazine ISO 9001：2015 REACH

CBNumber:: CB5231094

Molecular Formula:: C4H3BrN2

Molecular Weight:: 158.98

MDL Number:: MFCD08275680

MOL File:: 56423-63-3.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-11-04 16:48:09

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2-Bromopyrazine Properties

Boiling point	61°C/10mmHg(lit.)
Density	1.757 g/mL at 25 °C
refractive index	n20/D1.580
Flash point	92℃
storage temp.	-20°C
pka	-1.15±0.10(Predicted)
form	clear liquid
color	Colorless to Light orange to Yellow
InChI	InChI=1S/C4H3BrN2/c5-4-3-6-1-2-7-4/h1-3H
InChIKey	WGFCNCNTGOFBBF-UHFFFAOYSA-N
SMILES	C1(Br)=NC=CN=C1
Comptox DTXSID	DTXSID00349062
UNSPSC Code	12352200
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS05,GHS07

Signal word

Danger

Hazard statements

H302-H315-H318-H335

Precautionary statements

P261-P264-P280-P301+P312-P302+P352-P305+P351+P338

Hazard Codes

Risk Statements

22-41-37/38

Safety Statements

26-39

WGK Germany

HS Code

2933998090

Storage Class

11 - Combustible Solids

Hazard Classifications

Acute Tox. 4 Oral

NFPA 704

	1
1		0

2-Bromopyrazine price More Price(72)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	CDS005022	2-Bromopyrazine Aldrich	56423-63-3	100mg	$77.9	2026-04-30	Buy
Sigma-Aldrich	754595	2-Bromopyrazine 97%	56423-63-3	1g	$183	2026-04-30	Buy
TCI Chemical	B4352	2-Bromopyrazine >98.0%(GC)	56423-63-3	1g	$99	2026-04-30	Buy
TCI Chemical	B4352	2-Bromopyrazine >98.0%(GC)	56423-63-3	5g	$292	2026-04-30	Buy
Usbiological	261887	2-Bromopyrazine Asreported	56423-63-3	500mg	$347	2026-06-03	Buy

Product number	Packaging	Price	Buy
CDS005022	100mg	$77.9	Buy
754595	1g	$183	Buy
B4352	1g	$99	Buy
B4352	5g	$292	Buy
261887	500mg	$347	Buy

2-Bromopyrazine Chemical Properties, Uses, Production

Synthesis

A mixture of (2H)-pyrazinone (4.2 g, 0.044 mmol) and phosphorous oxybromide (25 g, 0.088 mole) was heated at 105 °C for 1.5 h. After cooling to room temperature, the mixture was poured on crushed ice (300 g) and made neutral with sodium hydrogen carbonate. The mixture was extracted with dichloromethane (2 x 100 mL). The extract was dried with magnesium sulfate and evaporated under vacuum. The residue was distilled under vacuum (70 °C, 12 torr). 2-Bromopyrazine (3.2 g, 46 %) was obtained as a colourless liquid[1].

References

[1] Laurence Decrane, Alain Turck, Nelly Plé. “Metalation of bromodiazines. Diazines XL.” Journal of Heterocyclic Chemistry 42 4 (2009): 509–513.

2-Bromopyrazine Preparation Products And Raw materials

Raw materials

Preparation Products

2,5-Dibromopyrazine 2,2'-Bipyrazine 2,3-Dibromopyrazine 2-(Methylthio)pyrazine

2-Bromopyrazine Suppliers

Global Suppliers ( 179)

Supplier	Tel	Email	Country	ProdList	Advantage
Suzhou Nuobeike Biological Technology Co., Ltd.	13962527677	1551481742@qq.com	China	296	58
Yantai Haorui Chemical Products Co. LTD	13697882860	yantaihaorui@163.com	China	55	58
Lanzhou Kangyuxin Biotechnology Co., Ltd.	0943-8293106	sales@kyxpharma.com	China	3606	58
Jinan Guangchen Pharmaceutical Technology Co., Ltd	18563726319	2845578351@qq.com	China	7027	58
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
PharmaBlock Sciences (Nanjing),Inc.	025-86918202 4000255188	sales@pharmablock.com	China	5000	55
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006356688 18621169109	market03@meryer.com	China	40202	62
Energy Chemical	400-0056266	sales8178@energy-chemical.com	China	44567	61
Wuhan Chemwish Technology Co., Ltd	86-027-67849912	sales@chemwish.com	China	35884	56
Capot Chemical Co., Ltd	+86 (0) 571 85 58 67 18		China	18187	66

Supplier	Advantage
Suzhou Nuobeike Biological Technology Co., Ltd.	58
Yantai Haorui Chemical Products Co. LTD	58
Lanzhou Kangyuxin Biotechnology Co., Ltd.	58
Jinan Guangchen Pharmaceutical Technology Co., Ltd	58
J & K SCIENTIFIC LTD.	76
PharmaBlock Sciences (Nanjing),Inc.	55
Meryer (Shanghai) Chemical Technology Co., Ltd.	62
Energy Chemical	61
Wuhan Chemwish Technology Co., Ltd	56
Capot Chemical Co., Ltd	66

View Latest Price from 2-Bromopyrazine manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-08-20	2-Bromopyrazine 56423-63-3	$1.10	1g	99.00%	100 Tons	Dideu Industries Group Limited
2020-04-30	2-Bromopyrazine 56423-63-3		1KG	99.0%+	800 tons	Shaanxi Dideu Medichem Co. Ltd
2019-07-06	2-Bromopyrazine 56423-63-3	$1.00	1KG	98%	150KG	Career Henan Chemical Co

2-Bromopyrazine
56423-63-3
$1.10
99.00%
Dideu Industries Group Limited

2-Bromopyrazine
56423-63-3
99.0%+
Shaanxi Dideu Medichem Co. Ltd

2-Bromopyrazine
56423-63-3
$1.00
98%
Career Henan Chemical Co

2-Bromopyrazine Spectrum

2-Bromopyrazine(56423-63-3)¹HNMR 2-Bromopyrazine(56423-63-3)¹HNMR

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2-BROMOPYRAZINE Pyrazine, bromo- (9CI) 2-BROMOPYRAZINE, 95+% 2-Bromo-1,4-diazine Bromopyrazine 2-Bromopyrazine > Pyrazine, 2-bromo- 2-Bromopyrazine ISO 9001：2015 REACH 56423-63-3 Heterocycle-other series API intermediates Pyrazines HALIDE