156171-61-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156171-61-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,1,7 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 156171-61:
(8*1)+(7*5)+(6*6)+(5*1)+(4*7)+(3*1)+(2*6)+(1*1)=128
128 % 10 = 8
So 156171-61-8 is a valid CAS Registry Number.