221015-48-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221015-48-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,0,1 and 5 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221015-48:
(8*2)+(7*2)+(6*1)+(5*0)+(4*1)+(3*5)+(2*4)+(1*8)=71
71 % 10 = 1
So 221015-48-1 is a valid CAS Registry Number.