Cas 1292358-55-4,1-benzyl-3-hydroxy-3-((3-aminophenyl)ethynyl)indolin-2-one

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Check Digit Verification of cas no

The CAS Registry Mumber 1292358-55-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,2,3,5 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1292358-55:
(9*1)+(8*2)+(7*9)+(6*2)+(5*3)+(4*5)+(3*8)+(2*5)+(1*5)=174
174 % 10 = 4
So 1292358-55-4 is a valid CAS Registry Number.

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1292358-55-4Relevant articles and documents

"On water"-promoted direct alkynylation of isatins catalyzed by NHC-silver complexes for the efficient synthesis of 3-hydroxy-3-ethynylindolin- 2-ones

Fu, Xiao-Pu,Liu, Li,Wang, Dong,Chen, Yong-Jun,Li, Chao-Jun

supporting information; experimental part, p. 549 - 553 (2011/05/03)

The direct alkynylation of isatins catalyzed by NHC-Ag complexes via the activation of alkyne C-H bond on water was developed for the efficient synthesis of 3-hydroxy-3-ethynylindolin-2-ones under an air atmosphere. A remarkable rate-enhancement by water

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1292358-55-4