64742-72-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 64742-72-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,7,4 and 2 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 64742-72:
(7*6)+(6*4)+(5*7)+(4*4)+(3*2)+(2*7)+(1*2)=139
139 % 10 = 9
So 64742-72-9 is a valid CAS Registry Number.