83814-09-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83814-09-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,8,1 and 4 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 83814-09:
(7*8)+(6*3)+(5*8)+(4*1)+(3*4)+(2*0)+(1*9)=139
139 % 10 = 9
So 83814-09-9 is a valid CAS Registry Number.