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111895-52-4

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111895-52-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111895-52-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,8,9 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 111895-52:
(8*1)+(7*1)+(6*1)+(5*8)+(4*9)+(3*5)+(2*5)+(1*2)=124
124 % 10 = 4
So 111895-52-4 is a valid CAS Registry Number.

111895-52-4Relevant articles and documents

Reactions of (E)-2-Iodo-1-tosyl-1-alkenes as Useful Synthetic Intermediates

Iwata, Noriyoshi,Morioka, Tetsuro,Kobayashi, Toshifumi,Asada, Takahiro,Kinoshita, Hideki,Inomata, Katsuhiko

, p. 1379 - 1388 (2007/10/02)

(E)-2-Iodo-1-tosyl-1-alkenes readily available by iodosulfonization of 1-alkynes were found to be useful synthons for the regio- and/or stereoselective preparation of 1-tosyl-1-alkynes, 1-tosyl-2-alkynes, (Z)-vinyl and (Z)-allyl sulfones, β-tosyl enamines

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