5690-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5690-89-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,9 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 5690-89:
(6*5)+(5*6)+(4*9)+(3*0)+(2*8)+(1*9)=121
121 % 10 = 1
So 5690-89-1 is a valid CAS Registry Number.