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25855-23-6

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25855-23-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25855-23-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,8,5 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 25855-23:
(7*2)+(6*5)+(5*8)+(4*5)+(3*5)+(2*2)+(1*3)=126
126 % 10 = 6
So 25855-23-6 is a valid CAS Registry Number.

25855-23-6Relevant articles and documents

Transition-metal free N-arylation of cyanamides by diaryliodonium triflates in aqueous media

Li, Jihui,Zheng, Xinyi,Li, Wei,Zhou, Wei,Zhu, Wen,Zhang, Yucang

supporting information, p. 77 - 80 (2016/01/12)

An operationally simple protocol is established for the synthesis of disubstituted cyanamides through the transition-metal free N-arylation of cyanamides by diaryliodonium triflates in aqueous media. Both alkyl and aryl cyanamides are well compatible with the mild reaction conditions. The one-pot synthesis of ureas is also possible through sequential arylation and hydrolysis of cyanamides, diaryliodonium triflates and H2O with good yields.

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