109929-23-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109929-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,2 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109929-23:
(8*1)+(7*0)+(6*9)+(5*9)+(4*2)+(3*9)+(2*2)+(1*3)=149
149 % 10 = 9
So 109929-23-9 is a valid CAS Registry Number.