1563-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1563-42-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,6 and 3 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1563-42:
(6*1)+(5*5)+(4*6)+(3*3)+(2*4)+(1*2)=74
74 % 10 = 4
So 1563-42-4 is a valid CAS Registry Number.