91761-24-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91761-24-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,6 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 91761-24:
(7*9)+(6*1)+(5*7)+(4*6)+(3*1)+(2*2)+(1*4)=139
139 % 10 = 9
So 91761-24-9 is a valid CAS Registry Number.