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190729-08-9

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190729-08-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 190729-08-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,7,2 and 9 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 190729-08:
(8*1)+(7*9)+(6*0)+(5*7)+(4*2)+(3*9)+(2*0)+(1*8)=149
149 % 10 = 9
So 190729-08-9 is a valid CAS Registry Number.

190729-08-9Relevant articles and documents

Improved synthesis for the rodenticides, diphenacoum and brodifacoum

Van Heerden, Pieter S.,Bezuidenhoudt, Barend C. B.,Ferreira, Daneel

, p. 1141 - 1146 (2007/10/03)

An improved synthesis of the 3-[3-(p-substituted phenyl)-1,2,3,4-tetrahydro-1-napththyl]-4-hydroxycoumarins, diphenacoum and brodifacoum, is described. The process is primarily based on the formation of one of the crucial bonds in the carbon backbone using organocopper methodology, and on the coupling of the 4-hydroxycoumarin moiety to the 3-biphenyl tetralin unit under strongly acidic conditions.

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