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13289-27-5

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13289-27-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13289-27-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,2,8 and 9 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 13289-27:
(7*1)+(6*3)+(5*2)+(4*8)+(3*9)+(2*2)+(1*7)=105
105 % 10 = 5
So 13289-27-5 is a valid CAS Registry Number.

13289-27-5Downstream Products

13289-27-5Relevant articles and documents

Phosgene-free synthesis of N-Aryl-N'-(4-pyridinyl)ureas via selenium-catalyzed oxidative carbonylation of 4-Aminopyridine with aromatic amines

Zhang, Xiaopeng,Li, Zhengwei,Wang, Yan,Dong, Shuxiang,Niu, Xueli,Zhang, Guisheng

, p. 197 - 209 (2016/10/22)

A facile, phosgene-free approach with high atom economy has been developed for the synthesis of N-Aryl-N'-(4-pyridinyl)ureas. With cheap selenium as the catalyst, carbon monoxide (instead of phosgene) as the carbonyl reagent, N-Aryl-N'-(4-pyridinyl)ureas can be obtained in a one-pot manner mostly in moderate to good yields via oxidative cross-carbonylation of 4-Aminopyridine with a variety of aromatic amines in the presence of oxygen under atmospheric pressure. The mechanism for the synthesis of N-Aryl-N'-(4-pyridinyl)ureas is also proposed.

Heteroacyl Azides as Acylating Agents for Aromatic or Heteroatomic Amines (1)

Stanovnik, B.,Tisler, M.,Golob, V.,Hvala, I.,Nikolic, O.

, p. 733 - 736 (2007/10/02)

The possibility of formation of substituted heterocyclic amides from heteroacyl azides and aromatic or heteroatomic amines was investigated.Although acylation proceeded in some cases under mild reaction conditions, formation of N,N'-disubstituted ureas was the main process at elevated temperatures.

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