26275-64-9 Usage
General Description
2 H-Pyrazole-3-carboxylic acid hydrazide is a chemical compound with the molecular formula C5H6N4O2. It is a hydrazide derivative of pyrazole carboxylic acid and is used in the pharmaceutical industry as a precursor in the synthesis of various drugs. 2 H-PYRAZOLE-3-CARBOXYLIC ACID HYDRAZIDE exhibits potential biological activity and is known to possess antitumor and antifungal properties. It is also used in the synthesis of agrochemicals and as a building block in organic synthesis. Additionally, 2 H-Pyrazole-3-carboxylic acid hydrazide is utilized in the development of analytical techniques for the detection and quantification of various chemical compounds.
Check Digit Verification of cas no
The CAS Registry Mumber 26275-64-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,2,7 and 5 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 26275-64:
(7*2)+(6*6)+(5*2)+(4*7)+(3*5)+(2*6)+(1*4)=119
119 % 10 = 9
So 26275-64-9 is a valid CAS Registry Number.
26275-64-9Relevant articles and documents
Synthesis of N- and C-azolyl-substituted pyrazolo[1,5-a]pyrimidines by recyclization of pyrimidinium salts
Danagulyan, Gevorg G.,Tumanyan, Araksya K.,Attaryan, Oganes S.,Tamazyan, Rafael A.,Danagulyan, Anna G.,Ayvazyan, Armen G.
, p. 483 - 490 (2015/10/19)
We studied the reaction of 2-(ethoxycarbonyl)methyl-1,4,6-trimethylpyrimidinium iodide with hydrazides of N-azolyl- and C-pyrazolyl-substituted carboxylic acids, which were synthesized by reacting the respective esters with hydrazine hydrate. This reaction was shown to result in recyclization and formation of ethyl 2-(pyrazolylalkyl)- and 2-(azolylalkyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine- 3-carboxylates. Besides pyrazolopyrimidines, the separation of reaction mixture provided in some cases also another recyclization product, 2-hydroxy-5,7-dimethylpyrazolo[1,5-a]pyrimidine.
