1057343-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1057343-91-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,7,3,4 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1057343-91:
(9*1)+(8*0)+(7*5)+(6*7)+(5*3)+(4*4)+(3*3)+(2*9)+(1*1)=145
145 % 10 = 5
So 1057343-91-5 is a valid CAS Registry Number.