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859784-53-5

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859784-53-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 859784-53-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,9,7,8 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 859784-53:
(8*8)+(7*5)+(6*9)+(5*7)+(4*8)+(3*4)+(2*5)+(1*3)=245
245 % 10 = 5
So 859784-53-5 is a valid CAS Registry Number.

859784-53-5Downstream Products

859784-53-5Relevant articles and documents

Benzyne 1,2,4-Trisubstitution and Dearomative 1,2,4-Trifunctionalization

Chen, Zhonghong,Dai, Liang,Lan, Yu,Li, Lianggui,Li, Yang,Shan, Chunhui,Shi, Jiarong,Tan, Min

supporting information, p. 10530 - 10536 (2021/07/28)

Both 1,2,4-trisubstitution and dearomative 1,2,4-trifunctionalization of benzyne have been accomplished from sulfoxides bearing a penta-2,4-dien-1-yl moiety. These cascade transformations proceed through a benzyne insertion into the S═O bond and an uncommon regiospecific anionic [4,5]-sigmatropic rearrangement, furnishing a C-O, C-S, and C-C bond on the C1-, C2-, and C4-position of a benzene ring, respectively. This study showcases new cascade benzyne reaction modes involving both distal C-H bond functionalization and dearomatization.

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