2563-12-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2563-12-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,6 and 3 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 2563-12:
(6*2)+(5*5)+(4*6)+(3*3)+(2*1)+(1*2)=74
74 % 10 = 4
So 2563-12-4 is a valid CAS Registry Number.