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21851-47-8

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21851-47-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21851-47-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,5 and 1 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21851-47:
(7*2)+(6*1)+(5*8)+(4*5)+(3*1)+(2*4)+(1*7)=98
98 % 10 = 8
So 21851-47-8 is a valid CAS Registry Number.

21851-47-8Downstream Products

21851-47-8Relevant articles and documents

DOPING-ADDITION OF ARENESULFENYL CHLORIDES TO OLEFINS IN THE PRESENCE OF PERCHLORIC ACID AND THE LITHIUM PERCHLORATE. CRITERIA OF LIMITING VARIANTS IN MECHANISM OF THESE REACTIONS

Kartashov, V. R.,Sorobogatova, E. V.,Grudzinskaya, E. Yu.,Zefirov, N. S.,Caple, R.

, p. 2231 - 2242 (2007/10/02)

The addition of perchloric acid in the addition reactions of sulfenyl chlorides to olefins gives rise to a doping effect, which exceeds the analogous effect of lithium perchlorate.Analysis of the dependence of rate of the model reactions and the yields of the doping products on the perchloric acid and lithium perchlorate concentrations showed that the doping additions can operate by two mechanisms, i.e., by the mechanism of a normal salt effect in the controlling state and by a mechanism of ion-pair exchange in the subsequent fast stages.

Carbon-14 Kinetic Isotope Effects and Mechanisms of Addition of 2,4-Dinitrobenzenesulfenyl Chloride to Substituted Styrenes-1-14C and Styrenes-2-14C

Kanska, Marianna,Fry, Arthur

, p. 7666 - 7672 (2007/10/02)

As the first reported examples of carbon isotope effects in simple electrophilic addition reactions we have measured the carbon-14 kinetic isotope effects in the addition of 2,4-dinitrobenzenesulfenyl chloride to a series of para-substituted α- and β-labe

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