23056-49-7 Usage
General Description
4-Bromo-2-methyl-3-nitro-pyridine is a chemical compound with the molecular formula C6H5BrN2O2. It is a nitro pyridine derivative, containing a bromine atom and a methyl group. This chemical is commonly used as an intermediate for the synthesis of pharmaceuticals, agrochemicals, and other organic compounds. It is also utilized in the production of dyes and pigments. 4-Bromo-2-methyl-3-nitro-pyridine is a yellow to brown solid at room temperature and should be handled with care due to its potentially hazardous properties.
Check Digit Verification of cas no
The CAS Registry Mumber 23056-49-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,0,5 and 6 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 23056-49:
(7*2)+(6*3)+(5*0)+(4*5)+(3*6)+(2*4)+(1*9)=87
87 % 10 = 7
So 23056-49-7 is a valid CAS Registry Number.
23056-49-7Relevant articles and documents
A Unified Approach to the Isomeric α-, β-, γ-, and δ-Carbolines via their 6,7,8,9-Tetrahydro Counterparts
Yan, Qiao,Gin, Emma,Banwell, Martin G.,Willis, Anthony C.,Carr, Paul D.
, p. 4328 - 4335 (2017/04/28)
A cross-coupling/reductive cyclization protocol has been employed in a unified approach to all four carbolines. So, for example, the 2-nitropyridine 8, which is readily prepared through an efficient palladium-catalyzed Ullmann cross-coupling reaction, is reductively cyclized under conventional conditions to give 6,7,8,9-tetrahydro-α-carboline that is itself readily aromatized to give α-carboline (1).
