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1570098-55-3

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1570098-55-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1570098-55-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,7,0,0,9 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1570098-55:
(9*1)+(8*5)+(7*7)+(6*0)+(5*0)+(4*9)+(3*8)+(2*5)+(1*5)=173
173 % 10 = 3
So 1570098-55-3 is a valid CAS Registry Number.

1570098-55-3Downstream Products

1570098-55-3Relevant articles and documents

Asymmetric, stereodivergent synthesis of (-)-clusianone utilizing a biomimetic cationic cyclization

Boyce, Jonathan H.,Porco, John A.

, p. 7832 - 7837 (2014)

We report a stereodivergent, asymmetric total synthesis of (-)-clusianone in six steps from commercial materials. We implement a challenging cationic cyclization forging a bond between two sterically encumbered quaternary carbon atoms. Mechanistic studies point to the unique ability of formic acid to mediate the cyclization forming the clusianone framework. Aim for selectivity: (-)-Clusianone was produced by a stereodivergent asymmetric total synthesis in six steps from commercial materials. The synthesis utilizes a challenging formic acid-mediated cationic cyclization forging a bond between two sterically encumbered quaternary carbon atoms.

Biomimetic total synthesis of (±)-doitunggarcinone A and (+)-garcibracteatone

Pepper, Henry P.,Tulip, Stephen J.,Nakano, Yuji,George, Jonathan H.

, p. 2564 - 2573 (2014/04/17)

A full account of our oxidative radical cyclization approach to the synthesis of garcibracteatone and doitunggarcinone A is presented. This includes the first enantioselective synthesis of garcibracteatone, which allowed the absolute configuration of the natural compound to be determined. The first synthesis of doitunggarcinone A is also described, which confirms our reassignment of the relative configuration of this molecule. Novel syntheses of monoterpene fragments used to construct the target molecules are also reported.

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