212203-09-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 212203-09-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,2,2,0 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 212203-09:
(8*2)+(7*1)+(6*2)+(5*2)+(4*0)+(3*3)+(2*0)+(1*9)=63
63 % 10 = 3
So 212203-09-3 is a valid CAS Registry Number.