18916-56-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18916-56-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,1 and 6 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 18916-56:
(7*1)+(6*8)+(5*9)+(4*1)+(3*6)+(2*5)+(1*6)=138
138 % 10 = 8
So 18916-56-8 is a valid CAS Registry Number.