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α,α'-Azino-bis(1-phenol-5-methylpyrazole-4-glyoxylate), also known as ABTS, is a chemical compound that serves as a widely used chromogenic substrate in various analytical techniques, particularly in the assessment of antioxidant activity. It is composed of two pyrazole rings connected by an azo group, with each pyrazole ring featuring a phenol and a methyl group. In its reduced form, ABTS exhibits a green color, which changes to blue-green upon oxidation. This color change allows for the quantification of antioxidants' ability to reduce the oxidized ABTS, making it a valuable tool in the study of oxidative stress and the efficacy of antioxidant compounds in biological systems.

75239-11-1

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75239-11-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75239-11-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,2,3 and 9 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 75239-11:
(7*7)+(6*5)+(5*2)+(4*3)+(3*9)+(2*1)+(1*1)=131
131 % 10 = 1
So 75239-11-1 is a valid CAS Registry Number.

75239-11-1Downstream Products

75239-11-1Relevant academic research and scientific papers

Reaction of Ethyl 3-Ethoxymethylene-2,4-dioxovalerate with Monosubstituted Hydrazines

Kurihara, Takushi,Uno, Toshiko,Sakamoto, Yasuhiko

, p. 231 - 233 (2007/10/02)

Reactions of ethyl 3-ethoxymethylene-2,4-dioxovalerate (1) with phenyl- and methylhydrazines are described.While the reaction of 1 with phenylhydrazine gave a mixture of ethyl 4-acetyl-1-phenylpyrazole-5-carboxylate (4) and ethyl 5-methyl-1-phenylpyrazole

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