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34259-90-0

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34259-90-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34259-90-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,2,5 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 34259-90:
(7*3)+(6*4)+(5*2)+(4*5)+(3*9)+(2*9)+(1*0)=120
120 % 10 = 0
So 34259-90-0 is a valid CAS Registry Number.

34259-90-0Relevant articles and documents

Domino Aryne Annulation via a Nucleophilic-Ene Process

Xu, Hai,He, Jia,Shi, Jiarong,Tan, Liang,Qiu, Dachuan,Luo, Xiaohua,Li, Yang

supporting information, p. 3555 - 3559 (2018/03/21)

1,2-Benzdiyne equivalents possess the unique property that they can react with two arynophiles through iteratively generated 1,2- and 2,3-aryne intermediates. Upon rational modification on the second leaving group of these aryne precursors, a domino aryne annulation approach was developed through a nucleophilic-ene reaction sequence. Various benzo-fused N-heterocyclic frameworks were achievable under transition metal-free conditions with a broad substrate scope.

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