1852-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1852-81-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,5 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1852-81:
(6*1)+(5*8)+(4*5)+(3*2)+(2*8)+(1*1)=89
89 % 10 = 9
So 1852-81-9 is a valid CAS Registry Number.