685549-49-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 685549-49-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,5,5,4 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 685549-49:
(8*6)+(7*8)+(6*5)+(5*5)+(4*4)+(3*9)+(2*4)+(1*9)=219
219 % 10 = 9
So 685549-49-9 is a valid CAS Registry Number.