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112635-43-5

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112635-43-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 112635-43-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,6,3 and 5 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 112635-43:
(8*1)+(7*1)+(6*2)+(5*6)+(4*3)+(3*5)+(2*4)+(1*3)=95
95 % 10 = 5
So 112635-43-5 is a valid CAS Registry Number.

112635-43-5Relevant articles and documents

Synthesis of 1-Aryltetralins and 1-Arylnaphthalenes via (4 + 2) Annulation of β-Ketosulfones with Styryl Bromides

Chang, Meng-Yang,Cheng, Yu-Chieh

supporting information, p. 1682 - 1685 (2016/04/26)

A novel route has been developed for the synthesis of various substituted 1-aryltetralins 6 and 1-arylnaphthalenes 8 via (1) K2CO3-mediated α-styrylation of β-ketosulfones 3 with bromostyryl bromides 4 and (2) stereocontrolled NaBH4-promoted reduction of the resulting γ-alkenones 5, followed by BF3·OEt2-catalyzed intramolecular annulation of the corresponding γ-alkenols 7 under rt/5 h and reflux/10 h conditions, respectively. The key structures of 6 and 8 were confirmed by X-ray crystallographic analysis. A plausible mechanism has been proposed.

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