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1428551-94-3

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1428551-94-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1428551-94-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,8,5,5 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1428551-94:
(9*1)+(8*4)+(7*2)+(6*8)+(5*5)+(4*5)+(3*1)+(2*9)+(1*4)=173
173 % 10 = 3
So 1428551-94-3 is a valid CAS Registry Number.

1428551-94-3Relevant articles and documents

Synthesis of [5]helicenes with a substituent exclusively on the interior side of the helix by metal-catalyzed cycloisomerization

Yamamoto, Kosuke,Okazumi, Mieko,Suemune, Hiroshi,Usui, Kazuteru

supporting information, p. 1806 - 1809 (2013/06/04)

[5]Helicenes with a substituent exclusively oriented toward the interior curvature of the helix are synthesized by metal-catalyzed cycloisomerization. In addition, novel azulene-fused helicenes have been found through cycloisomerization studies. These [5]helicenes shows a high enough configurationally stability to allow resolution by HPLC on a chiral stationary phase.

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