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ChemicalBook >> CAS DataBase List >>2,5-DibroMo-4-nitropyridine

2,5-DibroMo-4-nitropyridine

2,5-DibroMo-4-nitropyridine Structure
2,5-DibroMo-4-nitropyridine structure
CAS No.
221241-31-2
Chemical Name:
2,5-DibroMo-4-nitropyridine
Synonyms
Pyridine, 2,5-dibromo-4-nitro-
CBNumber:
CB32657504
Molecular Formula:
C5H2Br2N2O2
Molecular Weight:
281.89
MDL Number:
MOL File:
221241-31-2.mol
MSDS File:
SDS
Last updated:2026-05-28 01:09:28
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2,5-DibroMo-4-nitropyridine Properties

Boiling point 283.7±35.0 °C(Predicted)
Density 2+-.0.06 g/cm3(Predicted)
storage temp. under inert gas (nitrogen or Argon) at 2-8°C
pka -5.49±0.18(Predicted)
Appearance White to light yellow Solid

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302+H312+H332-H335-H315-H319
Precautionary statements  P264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P

2,5-DibroMo-4-nitropyridine price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Activate Scientific AS64024 2,5-Dibromo-4-nitropyridine 98% 221241-31-2 1g $124 2026-06-04 Buy
Activate Scientific AS64024 2,5-Dibromo-4-nitropyridine 98% 221241-31-2 5g $446 2026-06-04 Buy
Synthonix D76197 2,5-Dibromo-4-nitropyridine ≥95% 221241-31-2 250mg $30 2026-05-06 Buy
Synthonix D76197 2,5-Dibromo-4-nitropyridine ≥95% 221241-31-2 1g $90 2026-05-06 Buy
Synthonix D76197 2,5-Dibromo-4-nitropyridine ≥95% 221241-31-2 5g $300 2026-05-06 Buy
Product number Packaging Price Buy
AS64024 1g $124 Buy
AS64024 5g $446 Buy
D76197 250mg $30 Buy
D76197 1g $90 Buy
D76197 5g $300 Buy

2,5-DibroMo-4-nitropyridine Chemical Properties, Uses, Production

Synthesis

2,5-DIBROMO-4-NITROPYRIDINE 1-OXIDE

221241-25-4

2,5-DibroMo-4-nitropyridine

221241-31-2

General procedure for the synthesis of 2,5-dibromo-4-nitropyridine as 2,5-dibromo-4-nitropyridine nitrogen oxide: 2,5-dibromo-4-nitropyridine nitrogen oxide (18 g, 60.84 mmol) was added batchwise to stirred phosphorus tribromide (46 mL) at 0-5 °C. The reaction mixture was kept stirred at 5 °C for about 7 hours. Upon completion of the reaction, the mixture was slowly poured onto crushed ice and extracted with ethyl acetate. The organic layers were combined, washed with saturated brine and dried over anhydrous sodium sulfate. Subsequently, the organic phase was concentrated under reduced pressure to give the crude product. Finally, the crude product was purified by fast column chromatography (petroleum ether: ethyl acetate = 10:1) to afford the target compound 2,5-dibromo-4-nitropyridine (10 g, 59% yield).

References

[1] Patent: US2014/94456, 2014, A1. Location in patent: Paragraph 0832; 0835
[2] Patent: WO2015/153683, 2015, A1. Location in patent: Paragraph 0624

2,5-DibroMo-4-nitropyridine Preparation Products And Raw materials

Raw materials

2,5-Dibromo-4-nitropyridine 1-oxide

Preparation Products

2,5-DibroMo-4-nitropyridine Suppliers

Global Suppliers ( 46)
Supplier Tel Email Country ProdList Advantage
PharmaBlock Sciences (Nanjing),Inc. 025-86918202 4000255188 sales@pharmablock.com China 5000 55
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Chiba Pharmaceutical Science and technology Co, Ltd. 0531-81313138 13066006660 chibapharm@foxmail.com China 3996 55
Jiaxing Novartis Chemical Co., Ltd. 18957373295 China 1579 58
Xi'an NewProChem Co.,Ltd. 15332490153 newprochem@126.com China 991 55
Amadis Chemical Company Limited 571-89925085 sales@amadischem.com China 131885 58
Nanjing KaiMubo Pharmaceutical Co., Ltd. 025-66162170 China 7180 55
Combiphos (Shanghai) Biological Technology Co., Ltd. 021-65232103 17602124823 combiphos@vip.qq.com China 30000 58
Cochemical Ltd. 029-86115547 17791676824 sales@cochemical.com China 6746 58
Aikon International Limited 025-58851090 13913916777 sales01@aikonchem.com China 15947 58
Supplier Advantage
PharmaBlock Sciences (Nanjing),Inc. 55
Shanghai Hanhong Scientific Co.,Ltd. 64
Chiba Pharmaceutical Science and technology Co, Ltd. 55
Jiaxing Novartis Chemical Co., Ltd. 58
Xi'an NewProChem Co.,Ltd. 55
Amadis Chemical Company Limited 58
Nanjing KaiMubo Pharmaceutical Co., Ltd. 55
Combiphos (Shanghai) Biological Technology Co., Ltd. 58
Cochemical Ltd. 58
Aikon International Limited 58

2,5-DibroMo-4-nitropyridine Spectrum

2,5-DibroMo-4-nitropyridine(221241-31-2)1HNMR2,5-DibroMo-4-nitropyridine(221241-31-2)1HNMR2,5-DibroMo-4-nitropyridine(221241-31-2)13CNMR

221241-31-2 (2,5-DibroMo-4-nitropyridine) Related Search:

2,5-DibroMo-4-nitropyridine
Pyridine, 2,5-dibromo-4-nitro- 221241-31-2