2506-61-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2506-61-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,0 and 6 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2506-61:
(6*2)+(5*5)+(4*0)+(3*6)+(2*6)+(1*1)=68
68 % 10 = 8
So 2506-61-8 is a valid CAS Registry Number.