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206064-25-7

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206064-25-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 206064-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,0,6 and 4 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 206064-25:
(8*2)+(7*0)+(6*6)+(5*0)+(4*6)+(3*4)+(2*2)+(1*5)=97
97 % 10 = 7
So 206064-25-7 is a valid CAS Registry Number.

206064-25-7Relevant articles and documents

Efficient synthesis of oxindoles by thermal and rhodium(II)-catalyzed Wolff rearrangement

Lee, Yong Rok,Suk, Jung Yup,Kim, Byung So

, p. 8219 - 8221 (1999)

An efficient synthesis of oxindoles is achieved from a thermal and rhodium(II)-catalyzed Wolff rearrangement of diazoquinolinediones in moderate yields.

Cyclization and oxidation of o-bromophenylacetamides for the synthesis of oxindoles and isoindigoes

Liu, Liang,Song, Lei,Guo, Yujun,Min, Dewen,Shi, Tianchao,Zhang, Wu

, p. 354 - 359 (2017/12/26)

N-substituted oxindoles were obtained through a facile KOH/DMSO promoted intramolecular cyclization of o-bromophenylacetamides in good yields. Furthermore, isoindigo derivatives were readily synthesized through sequential intramolecular cyclization, oxida

A 2 - indolone derivatives and its preparation method

-

Paragraph 0047; 0048; 0049; 0050; 0051, (2017/08/25)

The invention relates to 2-indolone derivatives and a preparation method thereof. The structural formula is disclosed in the specification, wherein R1 is H, 4-Cl or 5-OCH3; and R2 is n-Bu, Cy, Bn, (4-OCH3)-Bn, i-Pr, n-C12H25, (4-Cl)-Bu, (4-Cl)-Bn or (4-OC

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