399555-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 399555-16-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,9,5,5 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 399555-16:
(8*3)+(7*9)+(6*9)+(5*5)+(4*5)+(3*5)+(2*1)+(1*6)=209
209 % 10 = 9
So 399555-16-9 is a valid CAS Registry Number.