3704-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3704-91-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,0 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 3704-91:
(6*3)+(5*7)+(4*0)+(3*4)+(2*9)+(1*1)=84
84 % 10 = 4
So 3704-91-4 is a valid CAS Registry Number.