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101971-71-5

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101971-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 101971-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,9,7 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 101971-71:
(8*1)+(7*0)+(6*1)+(5*9)+(4*7)+(3*1)+(2*7)+(1*1)=105
105 % 10 = 5
So 101971-71-5 is a valid CAS Registry Number.

101971-71-5Relevant articles and documents

Facile synthesis of symmetric and unsymmetric 1,3,4-oxadiazoles using 2-acyl(or aroyl)pyridazin-3-ones

Park, Yong-Dae,Kim, Jeum-Jong,Chung, Hyun-A,Kweon, Deok-Heon,Cho, Su-Dong,Lee, Sang-Gyeong,Yoon, Yong-Jin

, p. 560 - 564 (2003)

Symmetric and unsymmetric 1,3,4-oxadiazoles were synthesized in situ from hydrazine hydrate and the corresponding 2-acyl-4,5-dichloropyridazin-3-ones as acylating agents in polyphosphoric acid or BF3·OEt2 in excellent yields.

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