34980-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 34980-81-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,9,8 and 0 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 34980-81:
(7*3)+(6*4)+(5*9)+(4*8)+(3*0)+(2*8)+(1*1)=139
139 % 10 = 9
So 34980-81-9 is a valid CAS Registry Number.