749917-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 749917-43-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,9,9,1 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 749917-43:
(8*7)+(7*4)+(6*9)+(5*9)+(4*1)+(3*7)+(2*4)+(1*3)=219
219 % 10 = 9
So 749917-43-9 is a valid CAS Registry Number.