220503-15-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220503-15-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,5,0 and 3 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 220503-15:
(8*2)+(7*2)+(6*0)+(5*5)+(4*0)+(3*3)+(2*1)+(1*5)=71
71 % 10 = 1
So 220503-15-1 is a valid CAS Registry Number.