1309980-77-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1309980-77-5 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, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1309980-77:
(9*1)+(8*3)+(7*0)+(6*9)+(5*9)+(4*8)+(3*0)+(2*7)+(1*7)=185
185 % 10 = 5
So 1309980-77-5 is a valid CAS Registry Number.