27980-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 27980-30-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,9,8 and 0 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 27980-30:
(7*2)+(6*7)+(5*9)+(4*8)+(3*0)+(2*3)+(1*0)=139
139 % 10 = 9
So 27980-30-9 is a valid CAS Registry Number.