645394-53-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 645394-53-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,5,3,9 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 645394-53:
(8*6)+(7*4)+(6*5)+(5*3)+(4*9)+(3*4)+(2*5)+(1*3)=182
182 % 10 = 2
So 645394-53-2 is a valid CAS Registry Number.