67544-72-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67544-72-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,5,4 and 4 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 67544-72:
(7*6)+(6*7)+(5*5)+(4*4)+(3*4)+(2*7)+(1*2)=153
153 % 10 = 3
So 67544-72-3 is a valid CAS Registry Number.