20654-67-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20654-67-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,6,5 and 4 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20654-67:
(7*2)+(6*0)+(5*6)+(4*5)+(3*4)+(2*6)+(1*7)=95
95 % 10 = 5
So 20654-67-5 is a valid CAS Registry Number.