73977-52-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73977-52-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,7 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 73977-52:
(7*7)+(6*3)+(5*9)+(4*7)+(3*7)+(2*5)+(1*2)=173
173 % 10 = 3
So 73977-52-3 is a valid CAS Registry Number.