129819-66-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129819-66-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,8,1 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 129819-66:
(8*1)+(7*2)+(6*9)+(5*8)+(4*1)+(3*9)+(2*6)+(1*6)=165
165 % 10 = 5
So 129819-66-5 is a valid CAS Registry Number.