6750-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6750-66-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,7,5 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 6750-66:
(6*6)+(5*7)+(4*5)+(3*0)+(2*6)+(1*6)=109
109 % 10 = 9
So 6750-66-9 is a valid CAS Registry Number.