1312105-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1312105-99-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,1,2,1,0 and 5 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1312105-99:
(9*1)+(8*3)+(7*1)+(6*2)+(5*1)+(4*0)+(3*5)+(2*9)+(1*9)=99
99 % 10 = 9
So 1312105-99-9 is a valid CAS Registry Number.