645393-99-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 645393-99-3 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 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 645393-99:
(8*6)+(7*4)+(6*5)+(5*3)+(4*9)+(3*3)+(2*9)+(1*9)=193
193 % 10 = 3
So 645393-99-3 is a valid CAS Registry Number.