646517-54-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 646517-54-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,6,5,1 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 646517-54:
(8*6)+(7*4)+(6*6)+(5*5)+(4*1)+(3*7)+(2*5)+(1*4)=176
176 % 10 = 6
So 646517-54-6 is a valid CAS Registry Number.