208656-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 208656-71-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,6,5 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 208656-71:
(8*2)+(7*0)+(6*8)+(5*6)+(4*5)+(3*6)+(2*7)+(1*1)=147
147 % 10 = 7
So 208656-71-7 is a valid CAS Registry Number.