221876-40-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221876-40-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,8,7 and 6 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 221876-40:
(8*2)+(7*2)+(6*1)+(5*8)+(4*7)+(3*6)+(2*4)+(1*0)=130
130 % 10 = 0
So 221876-40-0 is a valid CAS Registry Number.