56816-69-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56816-69-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,8,1 and 6 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 56816-69:
(7*5)+(6*6)+(5*8)+(4*1)+(3*6)+(2*6)+(1*9)=154
154 % 10 = 4
So 56816-69-4 is a valid CAS Registry Number.