42982-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42982-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,9,8 and 2 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 42982-80:
(7*4)+(6*2)+(5*9)+(4*8)+(3*2)+(2*8)+(1*0)=139
139 % 10 = 9
So 42982-80-9 is a valid CAS Registry Number.