621685-62-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 621685-62-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,2,1,6,8 and 5 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 621685-62:
(8*6)+(7*2)+(6*1)+(5*6)+(4*8)+(3*5)+(2*6)+(1*2)=159
159 % 10 = 9
So 621685-62-9 is a valid CAS Registry Number.