665-83-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 665-83-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,6 and 5 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 665-83:
(5*6)+(4*6)+(3*5)+(2*8)+(1*3)=88
88 % 10 = 8
So 665-83-8 is a valid CAS Registry Number.