63938-99-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 63938-99-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,9,3 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 63938-99:
(7*6)+(6*3)+(5*9)+(4*3)+(3*8)+(2*9)+(1*9)=168
168 % 10 = 8
So 63938-99-8 is a valid CAS Registry Number.