19858-88-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19858-88-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,5 and 8 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19858-88:
(7*1)+(6*9)+(5*8)+(4*5)+(3*8)+(2*8)+(1*8)=169
169 % 10 = 9
So 19858-88-9 is a valid CAS Registry Number.