121212-39-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121212-39-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,2,1 and 2 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 121212-39:
(8*1)+(7*2)+(6*1)+(5*2)+(4*1)+(3*2)+(2*3)+(1*9)=63
63 % 10 = 3
So 121212-39-3 is a valid CAS Registry Number.