221536-75-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221536-75-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,5,3 and 6 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 221536-75:
(8*2)+(7*2)+(6*1)+(5*5)+(4*3)+(3*6)+(2*7)+(1*5)=110
110 % 10 = 0
So 221536-75-0 is a valid CAS Registry Number.