81898-39-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81898-39-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,9 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81898-39:
(7*8)+(6*1)+(5*8)+(4*9)+(3*8)+(2*3)+(1*9)=177
177 % 10 = 7
So 81898-39-7 is a valid CAS Registry Number.