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195134-70-4

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195134-70-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 195134-70-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,5,1,3 and 4 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 195134-70:
(8*1)+(7*9)+(6*5)+(5*1)+(4*3)+(3*4)+(2*7)+(1*0)=144
144 % 10 = 4
So 195134-70-4 is a valid CAS Registry Number.

195134-70-4Relevant articles and documents

Synthesis of the marine dibromooxoindoline convolutamydine C

Miah, Soyfur,Moody, Christopher J.,Richards, Ian C.,Slawin, Alexandra M. Z.

, p. 2405 - 2412 (1997)

A synthesis of the marine 4,6-dibromo-3-hydroxyoxoindoline convolutamydine C 3 is described. The key steps are the rhodium(II) perfluorobutyramide catalysed cyclisation of diazoamide 17 to give the oxoindoline 18, and the subsequent high yielding one-pot hydrolysis-decarboxylation-oxidation of 19 to 20. X-Ray crystal structures have been determined for the diazoamides 10 and 17 and for the oxoindolines 11 and 13.

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