129800-31-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129800-31-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,8,0 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 129800-31:
(8*1)+(7*2)+(6*9)+(5*8)+(4*0)+(3*0)+(2*3)+(1*1)=123
123 % 10 = 3
So 129800-31-3 is a valid CAS Registry Number.