20402-30-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20402-30-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,0 and 2 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 20402-30:
(7*2)+(6*0)+(5*4)+(4*0)+(3*2)+(2*3)+(1*0)=46
46 % 10 = 6
So 20402-30-6 is a valid CAS Registry Number.