117957-39-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117957-39-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,5 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 117957-39:
(8*1)+(7*1)+(6*7)+(5*9)+(4*5)+(3*7)+(2*3)+(1*9)=158
158 % 10 = 8
So 117957-39-8 is a valid CAS Registry Number.