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1227264-71-2

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1227264-71-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1227264-71-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,7,2,6 and 4 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1227264-71:
(9*1)+(8*2)+(7*2)+(6*7)+(5*2)+(4*6)+(3*4)+(2*7)+(1*1)=142
142 % 10 = 2
So 1227264-71-2 is a valid CAS Registry Number.

1227264-71-2Downstream Products

1227264-71-2Relevant articles and documents

Synthesis of the ABCDEFG ring system of maitotoxin

Nicolaou,Aversa, Robert J.,Jin, Jian,Rivas, Fatima

supporting information; experimental part, p. 6855 - 6861 (2010/07/04)

Maitotoxin (1) continues to fascinate scientists not only because of its size and potent neurotoxicity but also due to its molecular architecture. To provide further support for its structure and facilitate fragment-based biological studies, we developed an efficient chemical synthesis of the ABCDEFG segment 3 of maitotoxin. 13C NMR chemical shift comparisons of synthetic 3 with the corresponding values for the same carbons of maitotoxin revealed a close match, providing compelling evidence for the correctness of the originally assigned structure to this polycyclic system of the natural product. The synthetic strategy for the synthesis of 3 relied heavily on our previously developed furan-based technology involving sequential Noyori asymmetric reduction and Achmatowicz rearrangement for the construction of the required tetrahydropyran building blocks, and employed a B-alkyl Suzuki coupling and a Horner-Wadsworth-Emmons olefination to accomplish their assembly and elaboration to the final target molecule.

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