91057-43-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91057-43-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,0,5 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91057-43:
(7*9)+(6*1)+(5*0)+(4*5)+(3*7)+(2*4)+(1*3)=121
121 % 10 = 1
So 91057-43-1 is a valid CAS Registry Number.