6815-98-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6815-98-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,8,1 and 5 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6815-98:
(6*6)+(5*8)+(4*1)+(3*5)+(2*9)+(1*8)=121
121 % 10 = 1
So 6815-98-1 is a valid CAS Registry Number.