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97828-25-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97828-25-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,2 and 8 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 97828-25:
186 % 10 = 6
So 97828-25-6 is a valid CAS Registry Number.

97828-25-6Relevant articles and documents

Facile synthesis of norwogonin, isoscutellarein, and herbacetin

Yuan, Hu,Ye, Ji,Chen, Hao,Zhao, Zeng,Luo, Xukai,Zhang, Weidong,Sun, Qingyan

, p. 3389 - 3391 (2016)

An expeditious synthesis of norwogonin, isoscutellarein, and herbacetin, has been accomplished by a strategy featuring a borylation of sterically hindered aryl iodide and a one-pot oxidation to generate the C-3 and C-8 OH groups. The total synthesis gives excellent yields and conventional flash column chromatography is not needed for purification.

Preparation method of flavonoids


Paragraph 0213-0217; 0219-0220, (2017/11/16)

The invention discloses a preparation method of flavonoids. The method comprises the following step: in a solvent, in the presence of iodine and a silver salt or in the presence of iodine and a copper salt, performing an iodination reaction on a compound 1 to obtain a compound 2. Raw materials used in the method are easy to acquire, and the method has high yields and simple post processes, and does not need column chromatography.

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