23665-82-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23665-82-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,6,6 and 5 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 23665-82:
(7*2)+(6*3)+(5*6)+(4*6)+(3*5)+(2*8)+(1*2)=119
119 % 10 = 9
So 23665-82-9 is a valid CAS Registry Number.