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15731-16-5

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15731-16-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15731-16-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,7,3 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 15731-16:
(7*1)+(6*5)+(5*7)+(4*3)+(3*1)+(2*1)+(1*6)=95
95 % 10 = 5
So 15731-16-5 is a valid CAS Registry Number.

15731-16-5Upstream product

15731-16-5Downstream Products

15731-16-5Relevant articles and documents

Microwave-assisted cascade cycloaddition for C-N bond formation: An approach to the construction of 1,4,5,6-tetrahydropyrimidine and 2-imidazoline derivatives

An, Shujuan,Yin, Bing,Liu, Ping,Li, Xiangnan,Li, Chen,Li, Jianli,Shi, Zhen

, p. 2525 - 2532 (2013/09/24)

An efficient strategy for the synthesis of various 1,4,5,6- tetrahydropyrimidine and 2-imidazoline derivatives has been reported. The reactions proceeded from nitriles with ethylenediamine or 1,3-diaminopropane via cascade cycloaddition in the presence of CuL2 (L = 2-hydroxy-2-phenylacetate) to afford the corresponding 1,4,5,6- tetrahydropyrimidine or 2-imidazoline derivatives under reflux conditions or microwave irradiation in excellent yields.

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