659743-44-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 659743-44-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,9,7,4 and 3 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 659743-44:
(8*6)+(7*5)+(6*9)+(5*7)+(4*4)+(3*3)+(2*4)+(1*4)=209
209 % 10 = 9
So 659743-44-9 is a valid CAS Registry Number.