6509-38-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6509-38-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,0 and 9 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6509-38:
(6*6)+(5*5)+(4*0)+(3*9)+(2*3)+(1*8)=102
102 % 10 = 2
So 6509-38-2 is a valid CAS Registry Number.