99840-86-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99840-86-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,4 and 0 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 99840-86:
(7*9)+(6*9)+(5*8)+(4*4)+(3*0)+(2*8)+(1*6)=195
195 % 10 = 5
So 99840-86-5 is a valid CAS Registry Number.