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81602-61-1

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81602-61-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81602-61-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,0 and 2 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81602-61:
(7*8)+(6*1)+(5*6)+(4*0)+(3*2)+(2*6)+(1*1)=111
111 % 10 = 1
So 81602-61-1 is a valid CAS Registry Number.

81602-61-1Upstream product

81602-61-1Relevant articles and documents

syn-anti DICHOTOMY IN ZINC-PROMOTED DEHALOGENATION OF OPEN-CHAIN VICINAL DIHALIDES: THE EFFECT OF THE LEAVING GROUPS

Pankova, Magdalena,Kocian, Oldrich,Krupicka, Josef,Zavada, Jiri

, p. 2944 - 2951 (2007/10/02)

The title effect has been investigated in the homologous series of erythro- and threo-5,6-dihalodecanes(X=Br, Y=I; X=Cl,Y=I; X=F,Y=I; X=Br,Y=Br; X=Cl,Y=Br; X=F,Y=Br; X=Cl,Y=Cl; X=F,Y=Cl).It has been found that proportion of syn-elimination in the overall reaction varies with the variation of the halogen leaving groups in the orderIBrClF, ranging between the extreme 3-30percent in the erythro- and 5-60percent in the threo-series.On basis of the variable transition state theory, the observed pattern of syn-anti dichotomy has been correlated with the extent of double bond development in the transition state.

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