18980-15-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18980-15-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,8 and 0 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 18980-15:
(7*1)+(6*8)+(5*9)+(4*8)+(3*0)+(2*1)+(1*5)=139
139 % 10 = 9
So 18980-15-9 is a valid CAS Registry Number.