1397191-52-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1397191-52-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,7,1,9 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1397191-52:
(9*1)+(8*3)+(7*9)+(6*7)+(5*1)+(4*9)+(3*1)+(2*5)+(1*2)=194
194 % 10 = 4
So 1397191-52-4 is a valid CAS Registry Number.