7134-91-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7134-91-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,1,3 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 7134-91:
(6*7)+(5*1)+(4*3)+(3*4)+(2*9)+(1*1)=90
90 % 10 = 0
So 7134-91-0 is a valid CAS Registry Number.