646502-66-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 646502-66-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,6,5,0 and 2 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 646502-66:
(8*6)+(7*4)+(6*6)+(5*5)+(4*0)+(3*2)+(2*6)+(1*6)=161
161 % 10 = 1
So 646502-66-1 is a valid CAS Registry Number.