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851660-03-2

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851660-03-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 851660-03-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,1,6,6 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 851660-03:
(8*8)+(7*5)+(6*1)+(5*6)+(4*6)+(3*0)+(2*0)+(1*3)=162
162 % 10 = 2
So 851660-03-2 is a valid CAS Registry Number.

851660-03-2Relevant articles and documents

Cu-catalyzed [2 + 2 + 1] cascade annulation of vinyl iodonium salts with elemental sulfur/selenium for the modular synthesis of thiophenes and selenophenes

Chen, Chao,Wang, Fei,Wu, Chao,Wu, Yaxing

supporting information, p. 945 - 949 (2022/02/01)

A [2 + 2 + 1] annulation protocol has been established for the modular synthesis of 2,4-disubstituted thiophenes/selenophenes, with excellent regioselectivity. The reactions have been catalyzed by copper salt with elemental sulfur and selenium serving as

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