165681-92-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 165681-92-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,6,8 and 1 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 165681-92:
(8*1)+(7*6)+(6*5)+(5*6)+(4*8)+(3*1)+(2*9)+(1*2)=165
165 % 10 = 5
So 165681-92-5 is a valid CAS Registry Number.