331281-99-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331281-99-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,2,8 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 331281-99:
(8*3)+(7*3)+(6*1)+(5*2)+(4*8)+(3*1)+(2*9)+(1*9)=123
123 % 10 = 3
So 331281-99-3 is a valid CAS Registry Number.