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1021493-41-3

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1021493-41-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1021493-41-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,4,9 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1021493-41:
(9*1)+(8*0)+(7*2)+(6*1)+(5*4)+(4*9)+(3*3)+(2*4)+(1*1)=103
103 % 10 = 3
So 1021493-41-3 is a valid CAS Registry Number.

1021493-41-3Relevant academic research and scientific papers

Synthesis of tetrasubstituted 2-aryl-3-arylsulfonyl pyrroles: Unexpected regioselectivity in directed ortho-metallation reactions

Bailey, Nick,Demont, Emmanuel,Garton, Neil,Seow, Hui-Xian

, p. 185 - 188 (2008/09/21)

3-Arylsulfonyl pyrroles can be readily obtained from 3-Br-TIPS pyrrole via halogen-metal exchange and subsequent sulfonylation. The regioselectivity of the subsequent directed ortho-metallation (DOM) reaction in order to functionalise the C-2 position dep

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