3191-94-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3191-94-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,1,9 and 1 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3191-94:
(6*3)+(5*1)+(4*9)+(3*1)+(2*9)+(1*4)=84
84 % 10 = 4
So 3191-94-4 is a valid CAS Registry Number.