21912-89-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21912-89-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,1 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21912-89:
(7*2)+(6*1)+(5*9)+(4*1)+(3*2)+(2*8)+(1*9)=100
100 % 10 = 0
So 21912-89-0 is a valid CAS Registry Number.