20442-63-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20442-63-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,4 and 2 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20442-63:
(7*2)+(6*0)+(5*4)+(4*4)+(3*2)+(2*6)+(1*3)=71
71 % 10 = 1
So 20442-63-1 is a valid CAS Registry Number.