129769-61-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129769-61-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,7,6 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 129769-61:
(8*1)+(7*2)+(6*9)+(5*7)+(4*6)+(3*9)+(2*6)+(1*1)=175
175 % 10 = 5
So 129769-61-5 is a valid CAS Registry Number.