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196191-22-7

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196191-22-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 196191-22-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,6,1,9 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 196191-22:
(8*1)+(7*9)+(6*6)+(5*1)+(4*9)+(3*1)+(2*2)+(1*2)=157
157 % 10 = 7
So 196191-22-7 is a valid CAS Registry Number.

196191-22-7Downstream Products

196191-22-7Relevant articles and documents

Sulfur-controlled 6-exo aryl radical cyclisation of N-ethenyl-2-(2-bromophenyl)acetamides: Synthesis of (±)-tetrahydropalmatine and saulatine

Ishibashi, Hiroyuki,Kawanami, Hirotaka,Nakagawa, Hiroko,Ikeda, Masazumi

, p. 2291 - 2295 (2007/10/03)

Bu3SnH-mediated aryl radical cyclisation of 2-(2-bromophenyl)-N-[2,2-bis(phenylsulfanyl)ethenyl]-acetamide 7 takes place in a 6-exo-trig manner to give the isoquinolinone 9. The method has been applied to the synthesis of (±)-tetrahydropalmatine 16 and saulatine 24.

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