631918-79-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 631918-79-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,1,9,1 and 8 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 631918-79:
(8*6)+(7*3)+(6*1)+(5*9)+(4*1)+(3*8)+(2*7)+(1*9)=171
171 % 10 = 1
So 631918-79-1 is a valid CAS Registry Number.