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104707-43-9

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104707-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 104707-43-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,7,0 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 104707-43:
(8*1)+(7*0)+(6*4)+(5*7)+(4*0)+(3*7)+(2*4)+(1*3)=99
99 % 10 = 9
So 104707-43-9 is a valid CAS Registry Number.

104707-43-9Relevant articles and documents

Preparation of 5-Aryl-2-Alkyltetrazoles with Aromatic Aldehydes, Alkylhydrazine, Di-tert-butyl Azodicarboxylate, and [Bis(trifluoroacetoxy)iodo]benzene

Imai, Taro,Harigae, Ryo,Moriyama, Katsuhiko,Togo, Hideo

, p. 3975 - 3980 (2016/05/24)

A variety of 5-aryl-2-methyltetrazoles and 5-aryl-2-benzyltetrazoles were directly prepared in good to moderate yields by the reaction of aromatic aldehydes with methylhydrazine and benzylhydrazine, followed by treatment with di-tert-butyl azodicarboxylate and [bis(trifluoroacetoxy)iodo]benzene in a mixture of dichloromethane and 2,2,2-trifluoroethanol at room temperature. The present method is a novel one-pot preparation of 5-aryl-2-methyltetrazoles and 5-aryl-2-benzyltetrazoles through a [2N + 2N] combination under transition metal-free and mild conditions.

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