191540-25-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191540-25-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,5,4 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 191540-25:
(8*1)+(7*9)+(6*1)+(5*5)+(4*4)+(3*0)+(2*2)+(1*5)=127
127 % 10 = 7
So 191540-25-7 is a valid CAS Registry Number.
191540-25-7Relevant academic research and scientific papers
Ruthenium tetroxide catalyzed oxidations of 3-alkyl-4-(2-furyl)-4-oxobutanenitriles: Synthesis of methyl 2-alkyl-3-cyanopropanoates
Giovannini, Riccardo,Petrini, Marino
, p. 3781 - 3784 (2007/10/03)
Furan ring in 3-alkyl-4-(2-furyl)-4-oxobutanenitriles is completely oxidized by the RuCl3-KIO4 couple to efficiently afford, after esterification, methyl 2-alkyl-3-cyanopropanoates in good yields.
