99974-15-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99974-15-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,7 and 4 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 99974-15:
(7*9)+(6*9)+(5*9)+(4*7)+(3*4)+(2*1)+(1*5)=209
209 % 10 = 9
So 99974-15-9 is a valid CAS Registry Number.