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932841-57-1

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932841-57-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 932841-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,2,8,4 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 932841-57:
(8*9)+(7*3)+(6*2)+(5*8)+(4*4)+(3*1)+(2*5)+(1*7)=181
181 % 10 = 1
So 932841-57-1 is a valid CAS Registry Number.

932841-57-1Relevant articles and documents

Programmed Synthesis of Tetra-Aryl Thiophenes with Stepwise, Ester-Controlled Regioselectivity

Messina, Cynthia,Ottenwaelder, Xavier,Forgione, Pat

supporting information, p. 7348 - 7352 (2021/10/01)

Herein, we report a modular synthetic route to access tetra-arylated thiophene compounds with four different substituents with programmed chemical control provided by an ester activating/directing group. This method enables the functionalization of indivi

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