2196-21-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2196-21-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,9 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2196-21:
(6*2)+(5*1)+(4*9)+(3*6)+(2*2)+(1*1)=76
76 % 10 = 6
So 2196-21-6 is a valid CAS Registry Number.