863921-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 863921-83-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,3,9,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 863921-83:
(8*8)+(7*6)+(6*3)+(5*9)+(4*2)+(3*1)+(2*8)+(1*3)=199
199 % 10 = 9
So 863921-83-9 is a valid CAS Registry Number.