20464-23-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20464-23-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,4,6 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20464-23:
(7*2)+(6*0)+(5*4)+(4*6)+(3*4)+(2*2)+(1*3)=77
77 % 10 = 7
So 20464-23-7 is a valid CAS Registry Number.