1665286-80-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1665286-80-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,6,5,2,8 and 6 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1665286-80:
(9*1)+(8*6)+(7*6)+(6*5)+(5*2)+(4*8)+(3*6)+(2*8)+(1*0)=205
205 % 10 = 5
So 1665286-80-5 is a valid CAS Registry Number.