121617-59-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121617-59-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,6,1 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 121617-59:
(8*1)+(7*2)+(6*1)+(5*6)+(4*1)+(3*7)+(2*5)+(1*9)=102
102 % 10 = 2
So 121617-59-2 is a valid CAS Registry Number.