687638-82-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 687638-82-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,7,6,3 and 8 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 687638-82:
(8*6)+(7*8)+(6*7)+(5*6)+(4*3)+(3*8)+(2*8)+(1*2)=230
230 % 10 = 0
So 687638-82-0 is a valid CAS Registry Number.