12146-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 12146-91-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,1,4 and 6 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 12146-91:
(7*1)+(6*2)+(5*1)+(4*4)+(3*6)+(2*9)+(1*1)=77
77 % 10 = 7
So 12146-91-7 is a valid CAS Registry Number.