73657-51-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73657-51-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,6,5 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 73657-51:
(7*7)+(6*3)+(5*6)+(4*5)+(3*7)+(2*5)+(1*1)=149
149 % 10 = 9
So 73657-51-9 is a valid CAS Registry Number.