64544-74-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 64544-74-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,5,4 and 4 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 64544-74:
(7*6)+(6*4)+(5*5)+(4*4)+(3*4)+(2*7)+(1*4)=137
137 % 10 = 7
So 64544-74-7 is a valid CAS Registry Number.