128984-40-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128984-40-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,8 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128984-40:
(8*1)+(7*2)+(6*8)+(5*9)+(4*8)+(3*4)+(2*4)+(1*0)=167
167 % 10 = 7
So 128984-40-7 is a valid CAS Registry Number.