97842-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97842-81-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,4 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 97842-81:
(7*9)+(6*7)+(5*8)+(4*4)+(3*2)+(2*8)+(1*1)=184
184 % 10 = 4
So 97842-81-4 is a valid CAS Registry Number.