1241-12-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1241-12-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,2,4 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1241-12:
(6*1)+(5*2)+(4*4)+(3*1)+(2*1)+(1*2)=39
39 % 10 = 9
So 1241-12-9 is a valid CAS Registry Number.