654644-65-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 654644-65-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,4,6,4 and 4 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 654644-65:
(8*6)+(7*5)+(6*4)+(5*6)+(4*4)+(3*4)+(2*6)+(1*5)=182
182 % 10 = 2
So 654644-65-2 is a valid CAS Registry Number.