91976-43-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91976-43-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,7 and 6 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91976-43:
(7*9)+(6*1)+(5*9)+(4*7)+(3*6)+(2*4)+(1*3)=171
171 % 10 = 1
So 91976-43-1 is a valid CAS Registry Number.