656822-12-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 656822-12-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,6,8,2 and 2 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 656822-12:
(8*6)+(7*5)+(6*6)+(5*8)+(4*2)+(3*2)+(2*1)+(1*2)=177
177 % 10 = 7
So 656822-12-7 is a valid CAS Registry Number.