159-61-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159-61-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,5 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 159-61:
(5*1)+(4*5)+(3*9)+(2*6)+(1*1)=65
65 % 10 = 5
So 159-61-5 is a valid CAS Registry Number.