688333-53-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688333-53-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,3,3 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 688333-53:
(8*6)+(7*8)+(6*8)+(5*3)+(4*3)+(3*3)+(2*5)+(1*3)=201
201 % 10 = 1
So 688333-53-1 is a valid CAS Registry Number.