3905-97-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3905-97-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,0 and 5 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3905-97:
(6*3)+(5*9)+(4*0)+(3*5)+(2*9)+(1*7)=103
103 % 10 = 3
So 3905-97-3 is a valid CAS Registry Number.