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349453-01-6

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349453-01-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 349453-01-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,9,4,5 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 349453-01:
(8*3)+(7*4)+(6*9)+(5*4)+(4*5)+(3*3)+(2*0)+(1*1)=156
156 % 10 = 6
So 349453-01-6 is a valid CAS Registry Number.

349453-01-6Relevant articles and documents

Medium-sized cyclophanes. Part 55. Synthesis and conformational studies of [2.1.1] orthocyclophanes

Yamato,Sakaue,Tanaka,Tsuzuki

, p. 434 - 439 (2007/10/03)

[2.1.1]Orthocyclophanes 2 are prepared by pyrolysis of the corresponding 2-thia[3.1.1]orthocyclophane 2,2-dioxides 9, which are prepared by the reaction of 1,2-bis(2-bromomethylbenzyl)benzenes 7 with Na2S in ethanol under high dilution conditions, followed by oxidation with m-chloroperbenzoic acid. The conformational studies on [2.1.1]orthocyclophanes 2, which adopt flexible saddle and crown structures in comparison with the corresponding 10,15-dihydro-5H-tribenzo[a,d,g]cyclononene ([1.1.1]orthocyclophane) 1, are discussed.

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