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280784-53-4

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280784-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 280784-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,0,7,8 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 280784-53:
(8*2)+(7*8)+(6*0)+(5*7)+(4*8)+(3*4)+(2*5)+(1*3)=164
164 % 10 = 4
So 280784-53-4 is a valid CAS Registry Number.

280784-53-4Downstream Products

280784-53-4Relevant articles and documents

Tandem Au-catalyzed 3,3-rearrangement-[2 + 2] cycloadditions of propargylic esters: Expeditious access to highly functionalized 2,3-indoline-fused cyclobutanes

Zhang, Liming

, p. 16804 - 16805 (2005)

The treatment of readily available propargylic indole-3-acetates with a catalytic amount of AuCl(PPh3)/AgSbF6 leads to tandem activations of the propargylic esters and the in situ generated allenylic esters, resulting in expeditious access to highly functionalized cyclobutanes with fused 2,3-indoline and γ-lactone rings and an exocyclic E-double bond through sequential 3,3-rearrangement and [2 + 2] cyclization. Copyright

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