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23045-58-1

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23045-58-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23045-58-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,0,4 and 5 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 23045-58:
(7*2)+(6*3)+(5*0)+(4*4)+(3*5)+(2*5)+(1*8)=81
81 % 10 = 1
So 23045-58-1 is a valid CAS Registry Number.

23045-58-1Downstream Products

23045-58-1Relevant articles and documents

An intramolecular Schmidt reaction of δ-azido N-acylbenzotriazoles

Liu, Chun-Fang,Cao, Zhi-Qi,Ding, Shao-Lei,Zhu, Jing,Gu, Peiming

, p. 1147 - 1151 (2021)

A Lewis acid promoted intramolecular Schmidt reaction of N-acylbenzotriazoles with alkyl azides was designed and realized. The benzotriazole was not only employed as an efficient activator for initiating the Schmidt rearrangement but also used as a powerful terminator for the subsequent nucleophilic trapping of the isocyanate ion and/or N-acyliminium ion from the rearrangement. Thirteen δ-azido N-acylbenzotriazoles were investigated, and the conversion afforded the desired benzotriazole-1carboxamides and lactams with good to excellent yields.

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