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1612760-03-8

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1612760-03-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1612760-03-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,2,7,6 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1612760-03:
(9*1)+(8*6)+(7*1)+(6*2)+(5*7)+(4*6)+(3*0)+(2*0)+(1*3)=138
138 % 10 = 8
So 1612760-03-8 is a valid CAS Registry Number.

1612760-03-8Relevant articles and documents

Copper(0)/PPh3-Mediated Bisheteroannulations of o-Nitroalkynes with Methylketoximes Accessing Pyrazo-Fused Pseudoindoxyls

Meng, Huanxin,Xu, Zhenhua,Qu, Zhonghua,Huang, Huawen,Deng, Guo-Jun

supporting information, p. 6117 - 6121 (2020/08/12)

A copper(0)/PPh3-mediated cascade bisheteroannulation reaction of o-nitroalkynes with methylketoximes has been developed that provides viable access to a diverse range of pyrazo-fused pseudoindoxyl compounds. Synthetically useful functional groups including sensitive C-I bonds are compatible with this system. Mechanistic studies suggest a reaction cascade involving sequential PPh3-mediated deoxygenative cycloisomerization and copper-catalyzed [3 + 2] pyrazo-annulation.

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