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73963-34-5

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73963-34-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73963-34-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,6 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 73963-34:
(7*7)+(6*3)+(5*9)+(4*6)+(3*3)+(2*3)+(1*4)=155
155 % 10 = 5
So 73963-34-5 is a valid CAS Registry Number.

73963-34-5Relevant articles and documents

Transition-metal-free multinitrogenation of amides by C-C bond cleavage: A new approach to tetrazoles

Li, Lian-Hua,Li, Ying-Xiu,Liang, Yong-Min,Niu, Zhi-Jie

, p. 11148 - 11151 (2018)

A metal-free brand-new one-pot multinitrogenation of amides for the chemo- A nd regioselective synthesis of 1,5-disubstituted tetrazoles has been developed. By means of electrophilic amide activation, and further C-C bond cleavage and rearrangement, a diverse set of functionalized 1,5-DST derivatives were selectively constructed under mild conditions. As showcased in the mechanisms, the chemoselectivity is easily switched by the selection of the starting materials in the reaction.

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