2506-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2506-83-4 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, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2506-83:
(6*2)+(5*5)+(4*0)+(3*6)+(2*8)+(1*3)=74
74 % 10 = 4
So 2506-83-4 is a valid CAS Registry Number.