91290-54-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91290-54-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,2,9 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 91290-54:
(7*9)+(6*1)+(5*2)+(4*9)+(3*0)+(2*5)+(1*4)=129
129 % 10 = 9
So 91290-54-9 is a valid CAS Registry Number.