109909-95-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109909-95-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,0 and 9 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 109909-95:
(8*1)+(7*0)+(6*9)+(5*9)+(4*0)+(3*9)+(2*9)+(1*5)=157
157 % 10 = 7
So 109909-95-7 is a valid CAS Registry Number.