5231-88-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5231-88-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,3 and 1 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 5231-88:
(6*5)+(5*2)+(4*3)+(3*1)+(2*8)+(1*8)=79
79 % 10 = 9
So 5231-88-9 is a valid CAS Registry Number.