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57877-20-0

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57877-20-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57877-20-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,8,7 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57877-20:
(7*5)+(6*7)+(5*8)+(4*7)+(3*7)+(2*2)+(1*0)=170
170 % 10 = 0
So 57877-20-0 is a valid CAS Registry Number.

57877-20-0Relevant articles and documents

Oxidative Desymmetrization of Isoindolines Realized by tert -Butyl Nitrite (TBN) Initiated Radical sp 3C-H Activation Relay (CHAR)

Sun, Zheng,Shao, Yu,Zhang, Shuwei,Zhang, Yuxian,Yuan, Yu,Jia, Xiaodong

, p. 1663 - 1671 (2021/02/01)

An oxidative desymmetrization of isoindolines was realized by TBN initiated radical sp 3C-H activation relay (CHAR), providing a series of ω-hydroxylactams in high yields. This reaction exhibits broad substrate scope and functional group tolerance, and even N -alkyl iso-indolines can be well tolerated. The mechanistic study shows that the C-H bond oxidation, dioxygen trapping and intramolecular 1,5-H shift might be the key steps to achieve the oxidative desymmetrization.

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