156680-76-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156680-76-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,6,8 and 0 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 156680-76:
(8*1)+(7*5)+(6*6)+(5*6)+(4*8)+(3*0)+(2*7)+(1*6)=161
161 % 10 = 1
So 156680-76-1 is a valid CAS Registry Number.