89607-11-4 Usage
General Description
4-Bromo-1-methyl-5-nitro-1H-pyrazole is a chemical compound with the molecular formula C4H5BrN3O2. It is a derivative of pyrazole and is characterized by the presence of a bromine atom, a methyl group, and a nitro group on the pyrazole ring. 1H-Pyrazole, 4-bromo-1-methyl-5-nitro- is used in the synthesis of various pharmaceuticals and agrochemicals due to its unique chemical properties. It is an important intermediate in organic synthesis and can be used to create a variety of compounds with potential biological activity. Its versatile nature makes it a valuable component in the production of complex molecules for medicinal and agricultural purposes.
Check Digit Verification of cas no
The CAS Registry Mumber 89607-11-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,6,0 and 7 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 89607-11:
(7*8)+(6*9)+(5*6)+(4*0)+(3*7)+(2*1)+(1*1)=164
164 % 10 = 4
So 89607-11-4 is a valid CAS Registry Number.
89607-11-4Relevant articles and documents
NITRATION OF 4-HALO-1-METHYLPYRAZOLES IN SULFURIC ACID
Perevalov, V. P.,Manaev, Yu. A.,Baryshnenkova, L. I.,Kanep, E. E.,Andreeva, M. A.,Stepanov, B. I.
, p. 1081 - 1083 (2007/10/02)
The rate of nitration of 4-bromo- and 4-chloro-1-metylpyrazoles with nitric acid in various concentrations of sulfuric acid is higher at position 5 than at position 3.
AMINATION OF ISOMERIC BROMO-1-METHYLNITROPYRAZOLES
Perevalov, V. P.,Baryshnenkova, L. I.,Andreeva, M. A.,Manaev, Yu. A.,Denisova, I. A.,et al.
, p. 1322 - 1326 (2007/10/02)
A method was developed for the synthesis of 5-bromo-1-methyl-4-nitropyrazole from 1-methylpyrazole.In the reaction with 25percent aqueous ammonia at 180-190 deg C, 5-bromo-1-methyl-4-nitropyrazole is readily converted to 5-amino-1-methyl-4-nitropyrazole; the production of 4-amino-1-methyl-5-nitropyrazole from 4-bromo-1-methyl-5-nitropyrazole requires the presence of a copper catalyst; under the same conditions in the amination of 4-bromo-1-methyl-3-nitropyrazole, 4-amino-1-methyl-3-nitro- and 1-methyl-3-nitropyrazoles are formed in a 2 : 3 ratio.
