6403-07-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6403-07-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,0 and 3 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 6403-07:
(6*6)+(5*4)+(4*0)+(3*3)+(2*0)+(1*7)=72
72 % 10 = 2
So 6403-07-2 is a valid CAS Registry Number.