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176907-54-3

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176907-54-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 176907-54-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,9,0 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 176907-54:
(8*1)+(7*7)+(6*6)+(5*9)+(4*0)+(3*7)+(2*5)+(1*4)=173
173 % 10 = 3
So 176907-54-3 is a valid CAS Registry Number.

176907-54-3Relevant articles and documents

Studies Directed toward the Total Synthesis of Azaspiracid: Stereoselective Construction of C1-C12, C13-C19, and C21-C25 Fragments

Carter, Rich G.,Weldon, David J.

, p. 3913 - 3916 (2007/10/03)

equation presented The efficient entry to the C1-C12, C13-C19, and C21-C25 fragments of azaspiracid is outlined. The C1-C12 portion is constructed using a key asymmetric allenyl borane addition to the corresponding α,β-unsaturated aldehyde. The synthesis of the C13-C19 portion utilizes an Evans asymmetric alkylation followed by Sharpless asymmetric dihydroxylation. In addition, a novel solution to the mismatched effects of a neighboring chiral oxazolidinone during a Sharpless dihydroxylation is detailed.

Intramolecular termination of radical-polar crossover reactions

Murphy, John A.,Rasheed, Faiza,Roome, Stephen J.,Scott, Karen A.,Lewis, Norman

, p. 2331 - 2339 (2007/10/03)

Cyclic ethers result from intramolecular trapping of cations formed through the radical-polar crossover process.

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