766549-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 766549-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,6,5,4 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 766549-73:
(8*7)+(7*6)+(6*6)+(5*5)+(4*4)+(3*9)+(2*7)+(1*3)=219
219 % 10 = 9
So 766549-73-9 is a valid CAS Registry Number.