656816-06-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 656816-06-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,6,8,1 and 6 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 656816-06:
(8*6)+(7*5)+(6*6)+(5*8)+(4*1)+(3*6)+(2*0)+(1*6)=187
187 % 10 = 7
So 656816-06-7 is a valid CAS Registry Number.