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663600-00-8

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663600-00-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 663600-00-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,6,0 and 0 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 663600-00:
(8*6)+(7*6)+(6*3)+(5*6)+(4*0)+(3*0)+(2*0)+(1*0)=138
138 % 10 = 8
So 663600-00-8 is a valid CAS Registry Number.

663600-00-8Relevant articles and documents

Enantioselective total synthesis of brevetoxin A: Unified strategy for the B, E, G, and J subunits

Crimmins, Michael T.,Ellis, J. Michael,Emmitte, Kyle A.,Haile, Pamela A.,McDougall, Patrick J.,Parrish, Jonathan D.,Zuccarello, J. Lucas

scheme or table, p. 9223 - 9234 (2010/04/25)

Brevetoxin A is a decacyclic ladder toxin that possesses 5-, 6-, 7-, 8-, and 9-membered oxacycles, as well as 22 tetrahedral stereocenters. Herein, we describe a unified approach to the B, E, G, and J rings based upon a ring-closing metathesis strategy from the corresponding dienes. The enolate technologies developed in our laboratory allowed access to the precursor acyclic dienes for the B, E, and G medium-ring ethers. The strategies developed for the syntheses of these four monocycles ultimately provided multigram quantities of each of the rings, supporting our efforts toward the completion of a convergent synthesis of brevetoxin A.

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