79817-45-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 79817-45-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,8,1 and 7 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 79817-45:
(7*7)+(6*9)+(5*8)+(4*1)+(3*7)+(2*4)+(1*5)=181
181 % 10 = 1
So 79817-45-1 is a valid CAS Registry Number.