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1004985-49-2

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1004985-49-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1004985-49-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,0,4,9,8 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1004985-49:
(9*1)+(8*0)+(7*0)+(6*4)+(5*9)+(4*8)+(3*5)+(2*4)+(1*9)=142
142 % 10 = 2
So 1004985-49-2 is a valid CAS Registry Number.

1004985-49-2Relevant academic research and scientific papers

Total synthesis of (-)-dolastatrienol

Leung, Lai To,Chiu, Pauline

supporting information, p. 1042 - 1049 (2015/03/31)

The first asymmetric total synthesis of the tricyclic diterpenoid natural product (-)-dolastatrienol has been accomplished using a rhodium(II)-catalyzed carbene cyclization cycloaddition cascade reaction as the key step to construct the [5.4.0]carbobicyclic core. An intramolecular Heck reaction furnished the tricyclic skeleton and a challenging methylenation completed the synthesis of the target.

Asymmetric total synthesis of (-)-indicol by a carbene cyclization- cycloaddition cascade strategy

Lam, Sze Kui,Chiu, Pauline

, p. 9589 - 9599 (2008/09/21)

The first total synthesis of a secodolastane, (-)-indicol, has been accomplished. The key reaction is a rhodium(II)-mediated carbene cyclization-cycloaddition cascade, by which the core bicyclo[5.4.0]undecane skeleton was assembled. In this one-pot reaction, a domino series of transformations resulting in the construction of three o bonds and three stereocenters was realized in good yield.

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