16765-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16765-52-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,7,6 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 16765-52:
(7*1)+(6*6)+(5*7)+(4*6)+(3*5)+(2*5)+(1*2)=129
129 % 10 = 9
So 16765-52-9 is a valid CAS Registry Number.