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847027-68-3

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847027-68-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 847027-68-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,7,0,2 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 847027-68:
(8*8)+(7*4)+(6*7)+(5*0)+(4*2)+(3*7)+(2*6)+(1*8)=183
183 % 10 = 3
So 847027-68-3 is a valid CAS Registry Number.

847027-68-3Relevant articles and documents

IMPROVED PROCESS FOR PREPARING O-CHLOROMETHYLPHENYLGLYOXYLIC ESTERS, IMPROVED PROCESS FOR PREPARING (E)-2-(2-CHLOROMETHYLPHENYL)-2-ALKOXIMINOACETIC ESTERS, AND NOVEL INTERMEDIATES FOR THEIR PREPARATION

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Page/Page column 12, (2008/12/08)

An improved process for preparing o-chloromethylphenylglyoxylic esters of the formula (I) which comprises converting a compound of the formula (II) by reaction with magnesium into the corresponding Grignard reagent which is then reacted with a compound of the formula (III) to give the compound of the formula (IV) which is then cleaved by reaction with a chloroformic ester of the formula ClCOOR4 or by reaction with phosgene to give the compound of the formula (I), followed by the isolation of the compound of the formula (I), and also an improved process for preparing (E)-2-(2-chloromethylphenyl)- 2-alkoximinoacetic esters of the formula (VII) and intermediates for their preparation.

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