156856-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 156856-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,8,5 and 6 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 156856-80:
(8*1)+(7*5)+(6*6)+(5*8)+(4*5)+(3*6)+(2*8)+(1*0)=173
173 % 10 = 3
So 156856-80-3 is a valid CAS Registry Number.