1212421-96-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1212421-96-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,2,4,2 and 1 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1212421-96:
(9*1)+(8*2)+(7*1)+(6*2)+(5*4)+(4*2)+(3*1)+(2*9)+(1*6)=99
99 % 10 = 9
So 1212421-96-9 is a valid CAS Registry Number.