1212458-99-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1212458-99-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,2,4,5 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1212458-99:
(9*1)+(8*2)+(7*1)+(6*2)+(5*4)+(4*5)+(3*8)+(2*9)+(1*9)=135
135 % 10 = 5
So 1212458-99-5 is a valid CAS Registry Number.