1309980-68-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1309980-68-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,9,8 and 0 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1309980-68:
(9*1)+(8*3)+(7*0)+(6*9)+(5*9)+(4*8)+(3*0)+(2*6)+(1*8)=184
184 % 10 = 4
So 1309980-68-4 is a valid CAS Registry Number.