657390-20-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 657390-20-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,7,3,9 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 657390-20:
(8*6)+(7*5)+(6*7)+(5*3)+(4*9)+(3*0)+(2*2)+(1*0)=180
180 % 10 = 0
So 657390-20-0 is a valid CAS Registry Number.