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72183-66-5

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72183-66-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72183-66-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,8 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 72183-66:
(7*7)+(6*2)+(5*1)+(4*8)+(3*3)+(2*6)+(1*6)=125
125 % 10 = 5
So 72183-66-5 is a valid CAS Registry Number.

72183-66-5Relevant articles and documents

Sulfonic acid esters of 2,2,2-trichloroethylhydroxycyclobutanones

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, (2008/06/13)

Compounds of the formulae Ia, Ib, IIa and IIb STR1 are described, wherein R represents alkyl, haloalkyl, benzyl, naphthyl or substituted or unsubstituted phenyl and one of R1 and R2 represents methyl and the other represents hydrogen or methyl, or R1 and R2 together represent alkylene of 2 or 3 carbon atoms. The compound of the formulae Ia, Ib, IIa and IIb are valuable intermediates for the manufacture of pyrethroid pesticides or precursors thereof.

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