4291-12-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4291-12-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,9 and 1 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 4291-12:
(6*4)+(5*2)+(4*9)+(3*1)+(2*1)+(1*2)=77
77 % 10 = 7
So 4291-12-7 is a valid CAS Registry Number.