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857800-17-0

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857800-17-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 857800-17-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,8,0 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 857800-17:
(8*8)+(7*5)+(6*7)+(5*8)+(4*0)+(3*0)+(2*1)+(1*7)=190
190 % 10 = 0
So 857800-17-0 is a valid CAS Registry Number.

857800-17-0Relevant articles and documents

Ir(I)-catalyzed C-H bond alkylation of C2-position of indole with alkenes: Selective synthesis of linear or branched 2-alkylindoles

Pan, Shiguang,Ryu, Naoto,Shibata, Takanori

supporting information, p. 17474 - 17477,4 (2012/12/12)

A cationic iridium-catalyzed C2-alkylation of N-substituted indole derivatives with various alkenes has been developed, which selectively gives linear or branched 2-alkylindoles in high to excellent selectivity. This protocol relies on the use of the carbonyl group on the nitrogen atom of indole as a directing group: a linear product was predominant when an acetyl group was used as a directing group, and a branched product was predominant with a benzoyl group.

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